product description 1. An easy-to-use that improves your leg flexibility, balance and range of motion with a natural body posture. In just a few weeks of consistent use, your friends will notice a dramatic improvement in your movement. 2. Make stretching more comfortable to train with confidence. Using high-quality materials won't damage anything: the strap slides smoothly over the solid metal welded D-ring. Door anchors fasten the straps with metal bolts through the metal plate. 3. EASY MOBILITY - Flexible device ready to use in seconds: place a door anchor on any sturdy door post, close the door and pull the straps through the D-ring and you're ready to take your posture to the next level. Like a portable stretching machine 4. Superior Design - Won't damage the door and stay put. This leg stretch device won't scratch or damage your door, and it won't move or slide when you stretch your legs.