When I get up in the mornings between 4:30 and 5am to do my exercises before work, I don't have time to waste measuring and adjusting the trainer belt. With the HT I can easily attach number of handles I want to use for my workout to any of the 5 "D" rings on each main strap and/or at the end of the straps and use them accordingly. The main straps are doubled for strength and durability. I have used the HT for dips and pull-ups with ease. The handles are easy on the hands, and I like that when I am doing my dips the handles do not roll around the strap. They are also very sturdy. The Ab Straps are another compliment to the Human Trainer. It is consistent with the well built quality of the HM, and I have no complaints at the moment. The possibilities are endless with this equipment. I started noticing improvements in my core strength in no time.