With Cali 400ml Bamboo tumbler, we’re making a push into eco-friendly materials. We wanted to create a sustainably-sourced drinking bottle for our customers that didn’t compromise on any of the premium features we’re known for. Cali is made from bamboo. A new material for S’well that looks amazing feels premium and has a beautiful grain pattern. The outer shell is solid in color and fingerprint resistant. The lid features a slightly lighter wood and is finished with an engraved stainless steel badge.