The bottom is anti-slip and will not slip even if placed on a smooth surface. The hole of the bottom for closing and opening will not come into contact with the ground, and will not make your hand dirty. And its frosted surface is Non-slip and waterproof, comfortable and not easy to slide. ntegrated Buckle Design with built-in spring: Wear-resisting, not easy to oxidize, not easy to burn, long service life. The integrated buckle with built-in spring, is firm and stable, and the stool does not shake when it is fully fastened.