Specification: Material: new environmental protection silicone material Color box size: 57 * 63 * 30mm/2.24*2.48*1.18'' Size: S,M,L,XL Single box weight: 24g Function: Anti Snoring Style: A(Standard Adult Size), B(Different Size) Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 4 X Anti Snoring Devices 1 X Plastic Box 1 X Gift Box