This has a strong double-wheel design. These are large wheels that keep you stable. They won't wobble holding up to 450 pounds. You can push them in multiple directions for a better workout.
Even in a robust workout your hands won't ache or risk injury. You won't develop calluses or blisters as with lesser wheels. The clear wheels are well designed with a modern look. This is a great ab and core workout kit for both men and women of all skill levels. Perfect set for beginners.