Double Wall Vacuum Insulation - HASLE OUTFITTERS stainless steel tumblers are double walled and vacuum insulated, which keeps your favorite beverage hot 3 hours or cold 9 hours. Stainless Steel Tumbler - 304 stainless steel travel tumbler. Elector polished inside. Colored powder coated finish on the outside. Ensure your portable coffee mug unbreakable, rust resistant, sweat free, Non-toxic and harmless. BPA Free Lid - The lid is pop off, made of AS, chemical-free. It comes with a removable rubber gasket. no snap top, wide mouth design and drink hole on the top. The lid does not have hidden places to build up crud. Fits Most Cup Holders - 30oz Insulated tumblers easy to fit into most car cup holders. Carry around your beverages whether home, office, picnic, hiking or camping adventures. Satisfation & Guarantee - HASLE OUTFITTERS products help you stay cool, refreshed and hydrated for an active, on-the-go lifestyle. We provide the best quality tumblers and value to our customers. Product Description Designs: Electro Polished Interior. Durable Powder Coat. Lid with Rubber Ring Which to Keep the Heat. Air Hole Keep Pressure. Tips: Wash These Cups with Sponge Dipped into Warm Water. A Drink Hole on the Lid, Please Pay Attention Spill When You’re Placing It. Keep 9 Hours Cold Your beverages will stay ICE COLD long. Ice will waiting for you. Keep 3 Hours Hot Drinking Hot Coffee all morning won't be a dream anymore. Keep your favorite beverage hot for up to 3 hours. Cup Holder Friendly Tumblers Cup Holder Friendly. They'll fit in almost any cup holder on cars, boats, chairs, etc. Enlighten Your Life HASLE OUTFITTERS tumbler is an exquisite gift for your family, your friends and yourself!