PROFIT DOUBLE ROLLER WITH MAT gray/black /DK 3218N Properties: A small and easy-to-use device used to strengthen abdominal muscles, but also to generally improve the physical condition of users. Comes with a mat. PARAMETERS - wheel made of PP plastic - metal handle covered with PVC - anti-slip handle - soft foam backing mat (dimensions 28x17 cm);PROFIT DOUBLE ROLLER gray/black /DK 3216 Properties: A small and easy-to-use device used to strengthen abdominal muscles, but also to generally improve the physical condition of users. PARAMETERS - wheel made of PP plastic - metal handle covered with PVC - anti-slip handle