The Bare Skinny Tumbler is a 20oz, vacuum insulated, thermal tumbler using premium grade 18/8 stainless steel
TRIPLE WALL VACUUM INSULATED★ (NOT Double Insulated like most).
Dual 18/8 grade stainless steel walls with a copper lining in between to keeping your drinks piping hot or ice cold for hours
Includes a clear push-on, shatterproof sliding lid
Non-toxic and BPA-free