[30 Oz Tumbler] RSPIC Coolers Double Wall Vacuum Insulated Tumbler Cups Stainless Steel Travel Tumbler Rambler 30oz Coffee Mug with Lid - Keeps Drinks Cold and Hot (30 Oz) DOUBLE WALL VACUUM INSULATED - keeping your cold drinks ice-cold for up to 24 hours and your warm drinks scolding-hot for up to 6 hours. CRAFTED USING KITCHEN GRADE 18/8 STAINLESS STEEL - No Rusting. Non-Toxic. No leaching. BPA Free. Eco-Friendly. LIFETIME WARRANTY - We have a 100% cash back guarantee if you are not satisfied with your purchase. EASY TO CLEAN - Large, functional WIDE MOUTH opening and smooth structure for quick and simple washing. Radial corners that are curvy so there are no hard angles where dirt can hide. Dishwasher safe lid, and hand washable steel body.