“These belts were designed to securely fold around the top tube of your bike frame and cinch on a variety of bottles you’d like to carry. The belt folds over the top tube and through itself with origami-like grace and ensures a tight fit supported by the weight of the bottle. It is a snug fit on both 1″ and 1 1/8″ tubing. Buckles hold the bottle tight in place. Unfolded, these straps can be used to fasten objects to your racks.” w/ photos
