A Side Effect in Nebulous Grey (medium grey) Ballistic with Zest (orange with white grid) 200 Halcyon interior. A Side Effect in Nebulous Grey (medium grey) 525 Ballistic with Acai (dark purple with white grid) 200 Halcyon interior. A Side Effect in Nebulous Grey (medium grey) 525 Ballistic with Island (blue with white grid) 200 Halcyon interior. A Side Effect in Nebulous Grey (medium grey) Ballistic with Solaris (yellow with white grid) 200 Halcyon interior. A Side Effect in Nebulous Grey (medium grey) 525 Ballistic with Sangria (red with light red grid) 210 Cerylon interior. A Side Effect in Nebulous Grey (medium grey) 525 Ballistic. A Side Effect in Wilderness (forest green) 525 Ballistic with Tahoma (white with white grid) 200 Halcyon interior. A Side Effect in Wilderness (forest green) 525 Ballistic with Island (blue with white grid) 200 Halcyon interior. A Side Effect in Wilderness (forest green) 525 Ballistic with Moab (oxblood red with white grid) 200 Halcyon interior. A Side Effect in Wilderness (dark blue) Ballistic with Wisteria (pale purple with white grid) 200 Halcyon interior. A Side Effect in Wilderness (forest green) 525 Ballistic with Taiga (olive with white grid) 200 Halcyon interior. A Side Effect in Wilderness (forest green) Ballistic. A Side Effect in Deep Blue (dark blue) Ballistic with Wisteria (pale purple with white grid) 200 Halcyon interior. A Side Effect in Deep Blue (dark blue) 525 Ballistic with Moss (green with light green grid) 210 Cerylon interior. A Side Effect in Deep Blue (dark blue) Ballistic with Solaris (yellow with white grid) 200 Halcyon interior. A Side Effect in Deep Blue (dark blue) 525 Ballistic with Seafoam (pale green with white grid) 210 Cerylon interior. A Side Effect in Deep Blue (dark blue) 525 Ballistic with MountainGrey (grey with light grey grid) 210 Cerylon interior. A Side Effect in Deep Blue (dark blue) Ballistic. A Side Effect in Taiga (olive green with grey grid) 400 Halcyon with Northwest Sky (light grey with white grid) 200 Halcyon interior. A Side Effect in Taiga (olive green with grey grid) 400 Halcyon. A Side Effect in Black Ballistic with Kiwi (bright green with white grid) 200 Halcyon interior. A Side Effect in Black Ballistic with Sakura (pale pink with white grid) 200 Halcyon interior. A Side Effect in Black Ballistic with Acai (purple with white grid) 200 Halcyon interior. A Side Effect in Black 525 Ballistic with Zest (orange with white grid) 210 Cerylon interior. A Side Effect in Black Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. A Side Effect in Black 525 Ballistic with Taiga (olive green with white grid) 200 Halcyon interior. A Side Effect in Black 525 Ballistic with Island (blue with white grid) 200 Halcyon interior. A Side Effect in Black 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. A Side Effect in Black 525 Ballistic with Moab (oxblood red with white grid) 200 Halcyon interior. A Side Effect in Black Ballistic. A Side Effect in Aubergine (dark purple) Ballistic with Tidal (light blue with white grid) 200 Halcyon interior. A Side Effect in Aubergine (dark purple) Ballistic with Wisteria (pale purple with white grid) 200 Halcyon interior. A Side Effect in Aubergine (dark purple) Ballistic with Island (blue with white grid) 200 Halcyon interior. A Side Effect in Aubergine (dark purple) Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. A Side Effect in Aubergine (dark purple) Ballistic with Kiwi (green with white grid) 200 Halcyon interior. A Side Effect in Aubergine (dark purple) Ballistic. A Side Effect in Mars Red 630 Ballistic with Zest (orange with white grid) 200 Halcyon interior. A Side Effect in Burnt Orange 630 Ballistic with Dusk (blue-grey with light blue-grey grid) 210 Cerylon interior. A Side Effect in Burnt Orange Ballistic. A Side Effect in Constellation (light blue) 525 Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. A Side Effect in Constellation (powder blue) Ballistic with Sakura (pale pink with white grid) 200 Halcyon interior. A Side Effect in Constellation (light blue) Ballistic with Solaris Halcyon interior. A Side Effect in Constellation (light blue) Ballistic. A Side Effect in Coyote (tan) 525 Ballistic. A Side Effect in Ursa (grey-brown) Ballistic with Wisteria (pale purple with white grid) 200 Halcyon interior. A Side Effect in Ursa (grey-brown) Ballistic with Moss (green with light green grid) 210 Cerylon interior. A Side Effect in Ursa (grey-brown) 525 Ballistic with Dawn (blue-grey) 210 Ballistic interior. A Side Effect in Ursa (brown-grey) 525 Ballistic. A Side Effect in Cloud (light grey) 525 Ballistic with Tahoma (white with white grid) 200 Halcyon interior. A Side Effect in Cloud (light grey) 525 Ballistic. A Side Effect in Mars Red 630 Ballistic with Zest (orange with white grid) 200 Halcyon interior. A Side Effect in Mars Red Ballistic. A Side Effect in Saguaro 630 Ballistic with Zest (orange with white grid) 200 Halcyon interior. A Side Effect in Saguaro 630 Ballistic. A Side Effect in Raspberry (pale red) Ballistic with Moss (green with light green grid) 210 Cerylon interior. A Side Effect in Raspberry (pale red) Ballistic
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Side Effect

5.0
Rated 5.0 out of 5 stars
5.0 Stars (312 Reviews)

Color:

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In Production Options

3D Organizational Pouch, Shoulder Bag, or Waist Pack: You Decide.

1.7 liters / 105 cu. in.

Looking for the Side Kick or Side Hustle?
Add a key strap?
$7.00 - 8”, Snaphook-O-Ring / Coyote Webbing
visible variant TB0515-CA^^An 8-inch Coyote (tan) Key Strap with a snaphook at one end and an o-ring at the other.
A Side Effect with the included 5/8 Shoulder Strap attached. The interior of the Side Effect's pockets. The interior of the Side Effect on the pocketless side.
Person wearing a Side Effect as a crossbody bag. Person taking a phone from the front pocket of the Side Effect. Person opening the main pocket of their Side Effect while wearing it as a hip bag Person wearing the Side Effect as a hip bag A person running wearing the the Side Effect as a hip pack using the optional Gate Keeper Waist Strap. A person carrying the the Side Effect as a should bag using the included 5/8 Shoulder Strap. A possible loadout for the Side Effect. A 3x5 notecard in the front pocket of a Side Effect.
Thumbnail for a video explaining the features of the Side Effect.

TLDR

A small, yet versatile everyday crossbody shoulder bag that can also be used as a sling bag, waist pack, or organizer pouch.

  • Main compartment with 2 open-top organizer pockets and 4 O-rings
  • Zippered pocket on the exterior with an O-ring and a clipped 8" Key Strap
  • Wear it as a crossbody bag with our 5/8" Shoulder Strap (included) or as a sling bag / waistpack with a 1" Waist Strap (optional)

Want a bigger version of the Side Effect? Check out the Side Kick. Want an even bigger version? Check out the Side Hustle.

Full Description

Main Compartment

The main compartment opens with two zipper sliders, making it convenient for left or right-handed folks. It also allows you to choose where the sliders end up when the bag is closed. This compartment can fit essential items like your phone, sunglasses, wallet, snacks, or sunblock.

On one interior side of the main compartment are two open-top organizer pockets. These are designed to organize your smaller items, like earbuds, chapsticks, or chargers.

Inside the main compartment are four O-rings. Two are set in the middle towards the top of the bag and the other two are midway inside the bag along the side panels. You can use these O-rings to attach any of our Ghost Whale Organizer Pouches or Mystery Organizer Pouches.

Zippered Exterior Pocket

On the outside of the bag is a straight zippered pocket that is sized specifically for a passport. This pocket spans the full width of the Side Effect. There is also one O-ring with an included 8" Key Strap attached. You can choose to wear this as the front side of the bag or backside, depending on your preference. 

Ways to Carry the Side Effect

Shoulder/Crossbody Bag

On either side of the Side Effect are o-rings to which you can attach the adjustable 5/8" Shoulder Strap (included), made from nylon webbing and with the same plastic clips as our Key Straps.  

Waist Pack or Sling Bag

Also on the sides of the bag are unobtrusive webbing loops to which you can attach an optional 1" Gatekeeper Waist Strap, using our ubiquitous Gatekeeper clips. Wear the Side Effect around your waist or hips, and you've got a sweet waist pack. Wear it crossbody with the bag on your back, and you've got a mini sling bag. Either way, it's great for cycling, hiking, or any situation where you need your hands completely free. 

Wrist Bag

Clip the Handle Loop to one of the O-rings on either side of the Side Effect and carry the whole affair in hand.

Organizer Pouch

Clip one side of any of our Key Strap variants to the Side Effect and then clip the other side to an O-ring inside one of our larger bags. That way, the Side Effect stays tethered to your bag.

What's Included

5/8" Shoulder Strap

A simple and light-duty shoulder strap made of 5/8" nylon webbing. It is adjustable and has plastic snaphooks at each end. It does not have extra padding.

8" Snaphook/Snaphook Key Strap

As with most of our bags, we've included a key strap. 8" long from tip-to-tip, a snaphook on either end. Good for attaching your keys to.

A Set of Black Zipper Pulls

A set of pulls to extend or replace your metal pulls.

What's Optional

Gatekeeper Hip Belt

Attach this to the unobtrusive webbing loops on the sides of the Side Effect if you want to wear this as a sling bag or waist pack.

The main compartment opens with two zipper sliders, making it convenient for left or right-handed folks. It also allows you to choose where the sliders end up when the bag is closed. This compartment can fit essential items like your phone, sunglasses, wallet, snacks, or sunblock.

On one interior side of the main compartment are two open-top organizer pockets. These are designed to organize your smaller items, like earbuds, chapsticks, or chargers.

Inside the main compartment are four O-rings. Two are set in the middle towards the top of the bag and the other two are midway inside the bag along the side panels. You can use these O-rings to attach any of our Ghost Whale Organizer Pouches or Mystery Organizer Pouches.

On the outside of the bag is a straight zippered pocket that is sized specifically for a passport. This pocket spans the full width of the Side Effect. There is also one O-ring with an included 8" Key Strap attached. You can choose to wear this as the front side of the bag or backside, depending on your preference. 

Shoulder/Crossbody Bag

On either side of the Side Effect are o-rings to which you can attach the adjustable 5/8" Shoulder Strap (included), made from nylon webbing and with the same plastic clips as our Key Straps.  

Waist Pack or Sling Bag

Also on the sides of the bag are unobtrusive webbing loops to which you can attach an optional 1" Gatekeeper Waist Strap, using our ubiquitous Gatekeeper clips. Wear the Side Effect around your waist or hips, and you've got a sweet waist pack. Wear it crossbody with the bag on your back, and you've got a mini sling bag. Either way, it's great for cycling, hiking, or any situation where you need your hands completely free. 

Wrist Bag

Clip the Handle Loop to one of the O-rings on either side of the Side Effect and carry the whole affair in hand.

Organizer Pouch

Clip one side of any of our Key Strap variants to the Side Effect and then clip the other side to an O-ring inside one of our larger bags. That way, the Side Effect stays tethered to your bag.

5/8" Shoulder Strap

A simple and light-duty shoulder strap made of 5/8" nylon webbing. It is adjustable and has plastic snaphooks at each end. It does not have extra padding.

8" Snaphook/Snaphook Key Strap

As with most of our bags, we've included a key strap. 8" long from tip-to-tip, a snaphook on either end. Good for attaching your keys to.

A Set of Black Zipper Pulls

A set of pulls to extend or replace your metal pulls.

Gatekeeper Hip Belt

Attach this to the unobtrusive webbing loops on the sides of the Side Effect if you want to wear this as a sling bag or waist pack.

Materials

Exterior Fabric

bluesign® certified 630 denier High-Tenacity 2x2 Ballistic nylon

Interior Fabrics

bluesign® and OEKO-TEX® certified 200 denier Halcyon/nylon ripstop 
— or —
bluesign® certified 210 denier Cerylon 6,6 Ripstop nylon

Zippers

#8 YKK coil zippers

Specs

Dimensions

9.0" (w) x 5.5" (h) x 3.1" (d) / 230 (w) x 140 (h) x 80 (d) mm

Weight

6.9 oz / 195 grams

Volume

1.7 liters / 105 cu. in. (ASTM Standard Measure)

Total

5 (4 in the main compartment; 1 in the front zippered pocket)

5.0
Rated 5.0 out of 5 stars
Based on 312 reviews
99%would recommend this product
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312 reviews
  • Martha
    4 minutes ago
    Rated 5 out of 5 stars
    5 Stars

    The sections

    Light weight

    Roomy

    Color

    Was this helpful?
  • Steve F.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Finishings, Comfortable, High Quality Craftsmanship, Good Storage Size
    2 days ago
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Finishings, Comfortable, High Quality Craftsmanship, Good Storage Size
    Rated 5 out of 5 stars
    Side Effect - AWESOME!

    Bags are a very important part of my daily life. I appreciate bags, the quality of brands and their design . I have many brands and models. Too many bags as some would say!

    I generally look to have my bag just handle my every day carry- phone, wallet, keys, 2 pairs of glasses, pocket knife and a few other small incidentals. That's all. So for more or larger contents I am really not the guy.

    The Side Effect is perfect.

    - The material and craftsmanship is awesome as we can expect from TB.

    - This bag holds what I need and a bit more for surprise things like a gym lock and headphones.

    - I have ballistic nylon which is super durable and looks sleek and classy.

    - The size and profile is slim and comfortable.

    - The interior pockets are great to fit many of my things and keep them in place.

    - Great available mounts in the bag for carbines, key clips, etc.

    - I am not a fan of the thin shoulder strap they give you. I ordered the slightly thicker one. It fits and works great! Much more comfortable to use this in the crossbody wear.

    - An overall great bag, quite possibly the best bag I own. THANKS TB!

    Was this helpful?
  • STEVEN M.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Craftsmanship, Compact, Good Storage Size, Durable
    3 days ago
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Craftsmanship, Compact, Good Storage Size, Durable
    Rated 5 out of 5 stars
    Perfect plane partner

    Exactly the size needed keep essentials organized for the flight. Highly recommended!

    Was this helpful?
  • Sandra J.
    Verified Buyer
    Bought For Myself
    Product Standouts High Quality Finishings, Compact, Good Storage Size, Easily Adjustable
    3 days ago
    Bought For Myself
    Product Standouts High Quality Finishings, Compact, Good Storage Size, Easily Adjustable
    Rated 5 out of 5 stars
    Great little bag

    Holds a bit more than keys, phone, and wallet, but still small enough to be a great minimalist bag.

    Was this helpful?
  • Lesley
    6 days ago
    Rated 5 out of 5 stars
    5 Stars

    Love this guy! Perfect for odds and ends!

    Was this helpful?
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Sewn in Seattle

Our bags are designed and sewn right here in Seattle, Washington, U.S.A.

That allows us to be control freaks in the best way possible; we have direct control and oversight of the quality of our materials, our products, and the jobs and working environment that we help create. It also offers us a unique spontaneity: when we have an idea for a new product or accessory, we can design it, figure out how to build it, add it to our website and be ready to ship it out our front door all within just a few weeks. How cool is that?

Intrigued? You can find out more about the unusual way we do business on our Company Philosophy page.

THE BIHN Guarantee

Everything you buy from us here at TOM BIHN is satisfaction guaranteed. We’ve been in business since 1972 and we stand behind what we make.

If something goes wrong and it's our fault, we'll fix it for free. Repairs due to normal wear and tear or due to other things that are not our fault will be performed, when possible, at a reasonable charge right here in our Seattle factory where your bag was made. Defects in materials or workmanship are uncommon and almost always evident while the product is still new. Keep in mind that bags and packs are often subject to extreme wear in everyday use: do not expect them to last forever. Only true love lasts forever! You can expect a TOM BIHN product to give years and years of hard service.

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