Skip to content

This website uses cookies to give you the best, most relevant experience.

Underworks Tri-Top Binder

Color: Black

The Tri-top chest binder offers the highest level of flattening with three layers of compression fabric in the front and a single back layer.  It also has a unique cut that can allow for greater arm movement. The Tri-top stops at the mid-belly on most people. Your binder will stretch out a bit; be sure to follow the sizing guide for best fit. 

Thank you. Your notification has been registered.

A valid email address is required.

Shipping Info

CANADA Order Shipping cost
Expedited Shippingunder $99$7
Expedited Shippingover $99FREE
USA Order Shipping cost
Expedited Shippingunder $150$30 CAD
Expedited Shippingover $150FREE
Ottawa/Gatineau Order Shipping cost
Same-Day Shippingany$15
More shipping info


70% nylon and 30% spandex knit
Colour White or Black
Made In


Please note: If your binder doesn't fit right, we're happy to offer an exchange for another size or for store credit, as long as it is returned to us in re-sellable condition. You will be responsible for the cost of shipping it back to us. We do not offer refunds on binders.

Care Instructions

Wash in cold water on the gentle cycle.  Hang or lay flat to dry. Do not bleach, iron, or put your binder in the dryer.


Please note the Tri-top binder fits about one size smaller than the Ultimate Binder. For example, if you take Large in the Ultimate your size will most likely be XL for this binder.

To find your size take a snug measurement around the fullest part of your chest over the nipples, keeping your arms by your sides.

28"- 30"
Medium 34"-36"
Large 37"-40"
3X 49"-52"


The Tri-Top Binder is 14.5"to 16.5" long, depending on which size you order.