Description: Designed for people who have trouble of teeth grinding during sleep time. It helps them have a good night and get rid of teeth grinding. Come and have a look. Features: Made of food grade EVA material, soft, durable and flexible. Packed in a plastic storage case, convenient for you to carry. 4PCS of mouth guard are included, which comes in 2 sizes. Molding them to teeth is easy. Comfortable to sleep with it. Specifications: Type: Anti Grinding Teeth Protectors Material: EVA Color: Transparent Item Size: Large: Approx. 6.5 * 5.3cm / 2.56 * 2.09in Small: Approx. 5.5 * 4.5cm / 2.17 * 1.77in Package Size: Approx. 15.5 * 9 * 3.3cm / 6.1 * 3.54 * 1.3in Package Weight: Approx. 94g / 3.32oz Note: 1. Please soak it in hot water about 40 when you wear it for the first time. 2. Please drink some water before you wear it. Package List: 4 * Teeth Guards 2 * Storage Case 1 * User Manual (Multi-language)