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Door Strap + Monster Resistance Band

Our Gainz Box monster band is the versatile, go-anywhere accessory for customized resistance training—from mobility work and pull-up assistance to banded squats and bench presses. This band measures 41" in length and made of natural latex rubber.

The Gainz Box Door Strap gives athletes a simple, portable solution for dynamic mobility work and stretching exercises. Whether you set it up in the garage, the living room, or your office, all you need is a solid door that closes firmly and you're good to go.

The strap itself is made from a double zig-zag stitched, black nylon webbing, and measures wide and 10.5" long. One end of the strap is connected to a heavy-duty, black steel carabiner, while the other features a sewn together from seven layers of black webbing. For set-up, simply toss the anchor point over the top of a door and close it to keep the strap secure, then we attach any existing resistance bands to the carabiner and get to work. The strap won’t damage the door or chip its paint, and it’s durable enough to sustain most of the same exercises you’d perform with your mobility bands in the gym.

How To Use