Working or playing in wet conditions will leave your shoes soggy. Choosing a suitable shoe dryer is very important. With electric shoe dryer, you will wear dry shoes everyday. Timing adjustment 15-180min Material The outer shell is made of ABS Interior equipped nylon high temperature resistant material, which can withstand high temperatures up to 460℉ *When machine working, Surface temperature 140℉\u2014160℉, Built-in high temperature resistance materials can withstand 460℉. If the air outlet is blocked, it may cause overheating and automatic power off. Please be careful not to block the air outlet when using it.