The Rocket Wrap Compression Floss, when used properly, can be a great tool for restoring mobility and promoting blood flow to areas that normally have low circulation, such as elbows, knees, and shoulders. The Rocket Wrap Compression Floss has a nominal 150% stretch capacity and is available in two strengths: Black Standard Band - .051" Thick x 2" Wide x 7' Long, and Red X-Heavy Band - .060" Thick x 2" Wide x 7' Long. Contains natural latex rubber.