Frank Green bottles are here due to popular demand! I have been searching for a new reusable cup brand for a while and reluctant to stock a lot of them (for many reasons) but after discovering Frank Green I know you guys are going to love these as much as me! This is a Straw Lid that is compatible with the Frank Green Reusable 595ml Reusable Cup that is sold separately. Why? In as little as 15 uses, you’ll begin to offset the environmental impact it took to create your Frank Green. The innovative ceramic inner layer and stainless steel outer layer of this reusable cup is about creating a pure flavour and aroma experience. Plus, it’s triple-walled and vacuum insulated for the ultimate temperature control to keep beverages hot or cold for hours. MY FAVOURITE FEATURES 304 grade stainless steel Large & deep 595ml capacity Won't stain or carry odours 100% Plastic free Dishwasher safe Simple design, strong construction THE MATERIALS Stainless Steel Outer - Base & Lid are both made of stainless steel Ceramic Inner - This is what keeps your drink hot and tasting great! Plastic Lid - a very small amount of plastic on the lid to allow you to open/close without leaking.