The Volley Is Life Maars Maker Skinny Matte 20 oz Tumbler is the perfect container for your hot and cold beverages to take to volleyball practice, the beach on a hot day, or to work.Made with double-wall, food-grade stainless steel, these tumblers keep drinks hot for 12 hours and refreshingly cold for a stunning 24 hours. The plastic screw-on slide lid with the color-matching straw add extra practicality points. All materials used for this tumbler are non-toxic and BPA-free..: Material: double-wall food grade 18/8 stainless steel.: Powder-coated smooth matte finish.: Non-tapered shape and slim design.: Plastic screw-on slide lid with color-matching straw.: Keeps drinks cold for 24 hours and hot for 12 hours.: Non-toxic and BPA-free.: Hand wash only!