Classic curves, perfect proportions, and custom cours are just the start of what makes our ceramic reusable bottle so special. Multi-award-winning product design. Triple wall vacuum insated to retain heat or cold. Durable stainless steel bottle – made to last Ceramic lined for a better taste experience BPA free, fda eu approved safe materials Available with our easy-to-use straw lid Dishwasher safe: base: hand-wash only lid: yes Microwave safe: no