QUALITY BUILT IN: All Tally Tumblers are sized to fit in standard sized cup holders & have a no sweat design to make sure your hands stay dry. Relax as long as you want...It's no sweat! PREMIUM QUALITY STAINLESS STEEL: We over-engineered these 30 Oz double-wall kitchen-grade insulated tumblers with an 18/8 stainless steel body, which means your drink still keeps its temperature no matter how much of a beating this tumbler takes. SAFE MATERIAL: BPA *************************************************************, eco-friendly & extra sealed to provide maximum splash-proof capability. Tally Tumblers are also dishwasher safe. PREMIUM INSULATION: Made of the highest quality food grade stainless steel, these elegant Tally Tumblers keep your spirits at the right temperature & minimizes ice melt. ACCIDENT & ADVENTURE PROOF: No spills, mess, or accidents, these Tally Tumblers are perfect for the entire family: from the little ones to the adults.