One-touch type mug bottle. It is a lock ring type and the push button is easy to press. Vacuum double structure to keep warm and cold. Open with one touch. Easy-to-understand lock ring type. The mouth is wide and it is easy to put ice in it. -material Stainless Steel Polypropylene Silicone Rubber -capacity 650ml & 500ml -weight Approx. 289g & 251g