Savor Vacuum Insulated Tumbler for Hot or Cold Beverages VACUUM INSULATED: Vacuum insulated for maximum temperature retention  keeps liquid hot for 6 hours and cold for 12 hours! DOUBLE WALL PREMIUM STAINLESS STEEL: Constructed with double wall premium stainless steel that makes it virtually unbreakable. STYLISH DESIGN: Style meets function for an attractive drinking experience. SPILL-PROOF: Equipped with spill-proof lid that makes it definitely a worry-free tumbler! QUALITY GUARANTEE: High quality steel construction that will lasts for years to come.