Very well built . I have large hands and was concerned about the handles but was pleasantly surprised to find the handles are comfortable and strong. The door strap is well thought out. It's wide with a number of large hard plastic/rubber stoppers inside the strap pouch that can be adjusted to fit any door opening without fear of damaging the door or having it let loose. With the assortment of bands provided in the kit you will have all you need for a great workout routine