The exercise roller wheel is a simple yet effective tool for strengthening your core muscles, including your abs, obliques, and lower back. Strong core muscles can help stabilize your spine and reduce your risk of back pain or injury. Perfectly suitable for those who want to start sculpting the strong and toned abs.• Model: AB02• Weight Capacity: 400 lbs• Package Meas: 31.1 x 15.0 x 18.9 inch• Product Meas: 7.1 x 5.5 x 8.7 inch• G.W: 1.76 lbs (0.8 kg)• N.W: 1.37 lbs (0.622 kg)