— Made of non-toxic material, bite resistant and wearable, safe to play.— Fully enclosed running wheel to prevent pets from hurting their feet during exercise.— Aerodynamics design, can reduce the wind resistance, make smooth rotation and cause less shake.— With radial stripes ...— Made of non-toxic material, bite resistant and wearable, safe to play.— Fully enclosed running wheel to prevent pets from hurting their feet during exercise.— Aerodynamics design, can reduce the wind resistance, make smooth rotation and cause less shake.— With radial stripes design, increase friction and avoid your hamster slip and fall, also works great to provide run-up. - Description:Item type: Wheel Roller Toy - Diameter: 11cm - Color: blue - Weight: 85g - Material: plastic - Features:— Eco-friendly material— Encourage pet to exercise. - Package includes:3 * Wheel Roller Toy