and tough material: because of nylon webbing strap and foam stopper, door is tough and reliable to use for many times; The door is large and soft, which is good to prevent door from scratches and dents; The loop is equipped with an additional foam to protect your resistance bands, achieving longer using time Proper size: exercise bands door is about 2 inches/ 5 cm in diameter, 1.8 inches/ 4.5 cm in thickness and 11.2 inches/ 28.5 cm in length, thus the door is suitable for most doors, even there is a large space between the ends of door, helping people finish exercises better Portable exercise tool: fitness door attachment is small and to carry, only taking up a little spaces, you can use it , office or hotel, with this convenient tool, people can easily finish their training task at any places, good to help you finish the exercise amount that you need Fast fixation: the installation is easy and quick to finish, first you should put door resistance band over sturdy doorpost, close the door and pull the strap through the door, and then you can do your exercises with it; The resistance band can fit to most points of the door, including door top, side and bottom, based on your needs Sufficient set: great amount prepared to replace and use in ; Sufficient quantity allows people to place the door s at different places, convenient for frequent workout colour: black Material: foam + webbing Package Contents: 4 x Door Anchor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.