1. It can heat up quickly in 15 seconds and features 360-degree circulating constant-temperature heating. With constant-temperature heating, it doesn't burn, deform or damage shoes. Do not directly dry dripping shoes. 2. It is made of ABS + PC materials, which are pressure-resistant, high-temperature resistant, fireproof and flame-retardant. 3. It has double-sided porous heat dissipation, and the circulating heat dissipation effect of hot air is better. There are multiple heat dissipation holes densely distributed on both sides of the fuselage. When heating, a circulating heat flow is formed in the shoe space, taking into account both the sole and the upper. Even the dead corners can be evenly dried. 4. It can be used all year round without being idle. Whether it is winter snow boots or summer thin socks, it can be easily dried. 5. Product colors: white, pink, blue