Strauss Tummy Trimmer Pro and Double Wheel Ab Exerciser With Knee Pad Helps you get flat abs quicker and flatten tummy with regular use Durable Double spring contoured feet pedals steel with spring pull up Firms chests and arms 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. ERGONOMIC PERFORMANCE GRIPS – Thick ergonomically designed memory foam handles have been added the ab wheel to increase grip and overall comfort during workouts and even for prolonged use. Never slip and feel uncomfortable gripping an ab carver again.