FDA approved silica gel, odorless, safe and heat-resistant, allowing direct contact with food. Silica gel can help gloves to work at temperatures ranging from - 40 F to 446 F (- 40 C to 230 C), and maintain good performance at low and high temperatures. They protect your hands from heat, so you can hold the hot things firmly, and each glove fits your left and right hands. The skid-proof design enables you to hold things firmly. Gloves are hydrophobic, so they are easy to clean. They are small in size and light in weight. You can hang them anywhere in the kitchen or locker, taking up very little space.