Stainless Steel Tumbler 30 oz by BATIAN Lifestyle - FEEL GOOD TODAY with BRILLIANT DESIGNER MUGS DOUBLE WALL VACUUM INSULATION for maximum temperature retention and condensation free handling KEEPS DRINKS HOT for 6 HOURS and COLD for 24 HOURS. Ideal as a travel tumbler PREMIUM KITCHEN-GRADE 18/8 STAINLESS STEEL BPA FREE high quality design BODY DESIGN fits all standard cup holders CRYSTAL CLEAR SLIDING LID to prevent drink from splashing