Thickened PVC ball, strong bearing capacity, anti-burst for safe use.Environmental friendly material, anti-slip and durable to use.Nice equipment for Pilates, yoga, back and abdominal training and relaxation.Notes:1.Due to manual measurement, please allow 1-3 cm error.2.Due to problems between different monitors, the image may not reflect the actual color, please refer to the actual product. Thank you for understanding.3.Due to long-term transportation and storage, the power of the product may be exhausted, please fully charge the product after receiving it before using it??Feedback:If you are satisfied with our products and services, please leave your positive feedback and 5 stars.?Serve:We care about our valued customers and will always try our best to help you, hoping to build a long-term business with you.Notes:1.Due to manual measurement, please allow 1-3 cm error.2.Due to problems between different monitors, the image may not reflect the actual color, please refer to the actual product. Thank you for understanding.3.Due to long-term transportation and storage, the power of the product may be exhausted, please fully charge the product after receiving it before using it??Feedback:If you are satisfied with our products and services, please leave your positive feedback and 5 stars.?Serve:We care about our valued customers and will always try our best to help you, hoping to build a long-term business with you.