Specifications:

• Type: Single-Wheeled
• Application: AB Roller Coaster
• Package includes: 1 x Exercise Wheel Roller
• Unit Type: piece 
• Package Weight: 0.486kg (1.07lb.) 
• Package Size: 25cm x 20cm x 10cm (9.84in x 7.87in x 3.94in)

Features:

• Comfort and safety design.
• Compact,lightweight and portable.
• Made from reinforced ABS plastic,especially durability.
• For various users,from beginner to the experienced.
• Textured handles provide a comfortable and firmed grip.
• Steel Rod with Comfortable Foam Grips.
• It is designed to tone arms, thighs and to tone the core muscles 
• and decrease the risk of injury.