This 5 inch (12.7 cm) handmade glass anal plug features a safety mechanism that prevents it from being inserted too far. The plug is made of borosilicate glass, making it easy to clean, safe for health, and perfect for exciting temperature games. You can safely and easily heat the plug in the microwave, or simply put it in warm water. Are you more of a cold weather person? Just use your freezer or cold water. The conical tip makes insertion particularly easy and pleasant.