This is a silicone cleaning brush for glass water pipes that can be a lifetime.
Made from food-grade and flexible silicone, this cleaning brush can be cleaned at high temperatures. The bristles of the brush always maintain their original shape and will not break or fall off.
Unlike a sponge or nylon material, the silicone brush won't absorbent any grease or substances. It can prevent dirt from accumulating on the surface of the brush and save your time to clean it.