1. Material: Silicon 2. Around700-1200 ions 3. MOQ: 500PCS 4. High quality and can stretch... 5. Material: Made from 100% Surgical Grade Silicone that is extremely durable, featuring a 40% stretch feature for extra stretch over the hands. 6. Size: S(17.5cm), M(19cm), L(20.5cm), XL(22cm). 7. Color and packing be customized according to your requirements.