18-8 dual wall Stainless Steel with Copper-lined, deep draw liner. Vacuum insulation provides 9x heat retention. Lead-free vacuum seal. Spill-proof flip=top AS plastic lid featuring unique Tritan snap-locking closure. Powder-coated finish with silicone band accent. 1-year limited warranty. Patented.
8.75" D x 2.75" W x 2.75" H