Stretch Out Strap Pilates Essentials Book Package (8216PKG) Stretch Out Strap and Pilates Essentials Book Package Contains one original OPTP Stretch Out Strap and Pilates Essentials exercise book Using the Stretch Out Strap during Pilates exercise and yoga sessions provides sensory feedback Develop better posture, flexibility, core strength, muscular balance and body symmetry Softcover book by Angela Kneale contains over 40 exercises; 52 pages