100% Nylon Improve Your Health-Door Flexibility and Stretch Leg Thinning Band Increase Your Flexibility and Stretch Yourself More Easily and Safely. This Elastic Band Is Easy to Use, and the Soft Cushion Can Protect Your Waist, Hands and Feet, Allowing You to Improve Stretching Or Yoga Skills and Make You Feel Younger 2) Upgraded Design: Compared with the Traditional Stretch Strap, It Is Only a Very Narrow and Thin Strap, and Our Design Has Been Greatly Improved. In the Middle Part, We Use the Same Widened Soft Fabric on the Yoga Swing, and Use Adjustable Shoulder Straps on Both Sides. Skin-Friendly Fabric Will Provide More Support for Your Body, Protect the Waist and Back from Injury, and the Material Is Strong and Has a Larger Bearing Force. 3) Material and Size: This Back Bend Stretcher Is Made of High Quality Nylon Fabric, Which Is Soft and Firm to the Touch, the Material Is Skin-Friendly and Hypoallergenic, Easy to Clean The Adjustable Shoulder Strap Is 63 Inches in Length and the Fabric Size Is 67 Inches X 60 Inches, Providing You with Plenty of Playing Space. 4) Vast Users: Anyone Who Wants to Exercise Can Use It, It Has No Age Limit, Women, Men, Teenagers, Girls, the Elderly Use It for Postpartum Recovery Or Fat Burning and Body Shape. It Can Also Be Given as a Gift to Friends Or Family. 5) Relieve Back Pain: When You Hang Upside down, Get Instant Traction and Create More Space between the Vertebrae.