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Underworks Tri-Top Binder - 983

Regular price $47.00

This binder is a great option for folks (such as trans men, FTMs, gender queer people, and more!) looking for a sturdy binder, as well as a full range of motion. It binds down to the bellybutton, giving awesome chest coverage with three layers of nylon & spandex, while leaving the wearer free to move around. Some folks will take the bottom of the binder and roll it up a bit to avoid compressing the belly- a great compromise between having a flat chest and comfortable body. 

Three powerful layers of medical industry grade 70% nylon and 30% spandex throughout the front, and a single back layer, provide maximum comfortable chest binding.

Binder Sizing: With arms down on side, take a snug measurement around the fullest part of your chest. All measurements below are in inches.

X-small: 28-30
Small: 31-33
Medium: 34-36
Large: 37-40
X-large: 41-44
2X: 45-48
3X: 49-52

Specifications for Underworks Tri-Top Binder - 983

Made of Nylon, Spandex
Made in USA

Customer Reviews

Customer Reviews

Based on 134 reviews
Not in any way a binder for me

The front panel is not stiff at all, so there is a big amount of stretch instead of compression. Measured myself and got the size suggested and it is way too loose. The collar gaps and wrinkles up very obviously no matter which way you pull the straps or the front/back, and chest spills out the top of the arm holes worse than others I have tried. Would NOT recommend. Buy gc2b instead if you are above a D cup. That said, this site is great and in no way responsible for my deep inability to return items. 10/10 would order from gendergear again.

Rayne Timmerman

Underworks Tri-Top Binder - 983

Jay Bussières

Best fit, give a very flat chest even if you have very big breasts.


Really good, gives a perfectly flat look and super comfortable.

Binds really well for bigger chests

Fabric can be kind of itchy sometimes, and sometimes it folds weird (likely due to chest size), but overall it's the most comfortable binder we've found so far. Would recommend.