Drinking out of glass is better for you and the wonderful world we live in! LOTUS glass bottles with a silicon sleeve are 420ml, approximately 20cm tall. The bottle is borosilicate glass, the sleeve is silicone and lid is made of food-grade recyclable polypropylene. No chemicals and these bottles are made of BPA-free, phthalate-free and FDA approved materials.The silicone sleeve protects the glass, insulates, is dishwasher safe and lovely to hold.The silicone is 100% recyclable, everything is dishwasher proof, but do NOT freeze or microwave! A great gift for you or someone else!