Strauss Double Wheel Ab Exerciser With Knee Pad and Yoga Soft Chest Expander DURABLE CONSTRUCTION - Adopt ultra-quiet dual action wheels,environmental protection EVA ABS materials, stainless steel metal support frame, comfortable extended handle,anti-slip wear-resisting. Durable, stable, safe and high load capacity. ULTRA PORTABLE CONSTRUCTION - Easy to assemble, our Ab Roller is suitable for travelling, and manufactured from lightweight durable materials for easy carrying in bags or luggage, guaranteeing wherever you are, the perfect core workout will be within arm's reach. Helps in building upper body resistance and strength Can tone and sculpt every muscle group Soft handles for comfortable use Can tone and sculpt every muscle group Convenient as it can be used at home