Item type: wheel roller. Material: ABS+EVA+stainless steel tube+ foam. Color: black. Size: 30*15cm/11.81″*5.91″(L*D). Weight: about 400g. Bear Weight: 200 kg.Specifications:Comprehensive Fitness Exercise:AB Roller Coaster:Double-Wheeled:Ab Rollers:0.65:black:Fitness equipment:Double wheel healthy abdomen:1 ...