All of them are made of food-grade boiling baby chocolate BPA, which is resistant to high temperature and can be steam sterilized. It is like glass and is afraid of falling. Wide mouth design, easy to wash.
50-125mm Soft TPR wheel surface, shore A87 hardness, plain bearing, wheel color can be yellow, red, orange, gray and so on, walk with no noise, won't leave any mark on the floor, suitable for high-end floor and carpet.