Multi-Function Fitness Sit-Ups Assist Device

Features:
Small in size and weight, easy to use and carry, no restrictions on the place of use.
Three gear adjustable height makes it more suitable for your body and your exercise habits.
Thicken soft sponge, let the back of the foot force evenly without pain, soft and high density, comfortable and durable.
Rubber suckers are more powerful, vacuum chuck, strong suction, firm grip.
Safety and stability: strong iron structure, wonderful durability.
Multi-function, suitable for many sports such as roll belly movement, push-ups, side kick and so on.