Abdominal Sport Training Wheel Roller BodyBuilding Workout Fitness Exerciser Yellow

Translation missing: zh-CN.products.product.overview Specification:
Material: Plastic
Color: Black and  Blue
Size: Like the picture shows
 
Description:
Easy to use and assemble, dual wheel and the knee pad, the non-slip grip for extra comfort.
Durable, Light and portable, compact size, can put in the bag and carry it anywhere.
Strengthen and exercise the muscle, lose weight, keep slim, burn off excess calories.
 
How to use:
Keep yourself from pushing the ab roller with your hands.
And push it if the ab wheel starts to slide on the floor.
 
Package includes: 
1 x Abdominal Training Wheel
1 x Knee Pad