2pcs Roll-up Swimming Armbands,Inflatable Confidence Building Arm Bands for Swimming Trainers Starter Specifications: Product Dimensions:28*19cm(approx.) Quantity:1pair Applicable weight:15-80kg Material:PVC Product Functions and Features: √ Material: Made from thickened PVC and rubber material, which is more durable and long-lasting than other materials used in swimming armbands. √ The dual airbag design for ensures that even if one of the airbags gets punctured, but it still can provide an extra layer of safety and security. √ Easy to Inflate and Deflate, Our armbands are designed with two anti-leakage inflatable ports, very easy to inflate and deflate. Package Include: 1pair * Swimming Armbands (Other accessories in the picture are not included.) Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. We always put customer satisfaction in the first place. If you have any problems during shopping or use, please feel free to contact us, we will give you a satisfactory answer within 24 hours.