wuudi Stainless Steel Portable Collapsible Telescopic Travel Picnic Cup 3X DO YOU WANT A CUP EASILY TO CARRY WEHN YOU HAVE A CAMPING,TRAVELING OR OURDOOR ACTIVITIES .When you do not needs this cups ,you can storge it without much room . Collapses flat for easy carrying and storage and belt loop clasp. FOOD GRADE Stainless steel material,compact,safe,sturdy,healthy and high quality,they worked perfectly,small,light weight and light. With KEYCHAIN Keychain clip clip easily attaches to your backpack or belt loop THREE SIZES CHOICE The small size cup can hold about 60ml,the medium size cup can hold about 150ml,and the large size cup can hold about 250ml .And the detail ,you can check the product deacription . Made of hight quailty Stainless Steel .Remove top cover from the box, and then cup extends to its full height. It helps you take medication and drink anywhere.