Aquaphile 30 Fluid Ounces tumblers with stainless steel construction, double-wall vacuum insulation, they?re perfect for travel, outdoor sports, camping. Product included: 1 x 30oz tumbler, 2 x leak proof lid, 2 x stainless steel straws and 1 x straw brush. Double wall 18/8 food grade vacuum insulated: keep your drinks cold up to 24 hours and keep hot up to 12 hours. Our mugs are great as a gift for your friends, or family.