AB Roller 4 Wheel , uniquely designed AB wheel roller has 4 wheels, and provides better balance and support when rolling than regular rollers. It is lightweight and portable . AB roller builds muscle density and sculpts the abdomen , shoulders , arms , and back . The textured wheels are slip-resistant and durable . Ergonomic design reduces hand fatigue and prevents slipping off the hands , while increasing stability and control for improved abdominal exercises . 

• Material : PVC , Foam , Alloy Steel . 
• color : Black.