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Quantity
1
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 a...
Reviews
4.9
426 ratings
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Great bag for carrying gear to class!
I'm a college professor and in addition to books and a notebook I carry a lot of stuff to class. There are markers, reading glasses, a remote for presentations, a thumb drive, and extra pens. I had been stuffing them -- undomfortably -- in my pockets but then saw an ad for Tom Bihn bags and thought they looked great. I searched to see if one would work for me and found the Side Effect. In addition to looking and feeling great, it does the job and has made things easier. I'll buy another of their bags soon!
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Walter · May 8, 2026
The travelers extra space
Love the bag. Provides enough space during my travels when I dont want to carry everything in my pockets plus some other extra things. It is the perfect size. Small enough to be a good cross body bag but spacious enough to hold things to have your pockets and hands free. Id recommend!
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Raymond · April 23, 2026
Deceptively spacious
Like most Tom Bihn products, this one feels like it fits WAY more than the specs or exterior size would have you believe. I use one as an organized "packing cube" whenever I go out, and it's easy to throw into different bags depending on which one I want to carry that day. If you angle it right, it slots into the Small Cafe Bag next to a 32 oz Owala perfectly. I keep a pair of compact binoculars, hand sanitizer, floss, glasses wipe, tiny pocket knife/multi-tool, and some nanobags in there and there's still room to squeeze in more if I want to. Glad I went for the Side Effect over the Side Kick or Side Hustle for my use cases.
