High-Quality Our water bottles are BPA-free and made of liner 304 stainless steel in anti-oxidation and corrosion resistance to protect the water bottle from oxidation and peculiar smell,which means There will be no metallic smell or rust on your Water Bottle. Keep Heat and Cold Our metal water bottle has double-layer heat insulation and vacuum heat insulation.It has good leak-proof performance and can keep the beverage cold or hot for 24 hours.There will be no condensation. Convenient Multi-purpose Lid Insulated Bottles are new screw top design,leak proof,So you can put it in your backpack without worrying about any spillage.The wide mouth of the Vacuum Bottle makes it easy to pour into a serving cupr,replaces many single use plastic water cup. Full Size We sell Stainless Steel Thermo in 500ml,750ml,1l,1.5l capacity,You can choose the capacity you need according to your needs,Suitable for home,office,school,travel,outdoor,sports,mountaineering,hiking,camping.