The gold-curved upper cover is anti-rolling, and it can be placed easily to prevent the nipple from touching the tabletop. The upper cover has a leak-proof design, and the nipple can be fixed without alignment, and the sealing is excellent. The middle cap of the feeding bottle is labor-saving bumps, easy to assemble and effortless. Spiral lock leak-proof structure, excellent sealing performance of the bottle cap, 70 ˚C foaming milk will not leak, and the bottle will not burst if dropped. The accessories are completely disassembled, washed and cleaned most thoroughly, and can be sterilized by steam, water, and ultraviolet rays. Suitable for wide-mouth 200/270/360ml milk bottles. Material Upper cover/middle cover: polypropylene (-20℃~+100℃) Applicable bottle type Wide mouth feeding bottle 200ml/270ml/360ml Origin Made in Taiwan