The Original Stretch Out Strap by OPTP is a high-quality stretching strap made of durable woven nylon. It features 10 individual loops for various stretching exercises and comes with an instructional exercise book and a mobile app with video demonstrations. This strap is ideal for yoga, physical therapy, and stretching exercises for the IT band, hamstrings, quads, and calves. It is recommended by physical therapists and athletic trainers.