Swig 22-ounce Matte Tumblers keep drinks cold up to 9 hours and hot up to 3 with double walled vacuum sealed copper coated insulation A silicone base minimizes slips and tips plus it gives you a quiet landing when you put your tumbler down The SEAL-TITE Tritan lid is BPA-Free spill resistant and shatter proof Triple Insulated Vacuum Sealed Technology Thicker Professional Grade 188 Stainless Steel Powder Coat Finish Spill Resistant Shatterproof BPA-Free Tritan Lid Non-Slip Silicone Base Cup Holder Friendly Top shelf dishwasher safe