Stylish & Versatile Great for hot or cold drinks, Boston Warehouse Insulated Tumblers can be used for smoothies, coffee and everything in between. These tumblers come in fun, warm colors and offer a generous 24-ounce capacity. BPA-free. Warehouse Insulated Tumbler, Warm Tones, Set of 4: Acrylic. 24-ounce capacity. Double wall insulation. BPA-free. Dimensions: 8 in. x 4.25 in. x 4.25 in. A Closer Look: Made of durable acrylic. Each tumbler has double wall insulation so your drinks will stay cooler or hotter longer. Double wall insulation also prevents condensation. Take Care: Hand washing recommended.