Built to fit your active lifestyle, thinksport Stainless Steel Insulated Sports Bottles provide an alternative to bottles containing Bisphenol-A (BPA). thinksport Stainless Steel Insulated Sports Bottles are built tough and super insulated to keep the contents cold or hot for hours. This insulated bottle has a double-walled and vacuum-sealed stainless steel construction. When you fill your insulated bottle you won't feel the temperature of the contents; now you won't ever have to grab a blazing hot bottle or a freezing cold one either. You can fill our bottle with ice, your favorite drink and enjoy a cold drink without the bottle sweating all over your gym bag, backpack, or desk. thinksport bottles elegant design features a wide mouth opening (for ease of filling and cleaning) and a smaller polypropylene spout (for convenient drinking). thinksport bottles also feature a removable interior mesh filter that keeps ice from blocking the drinking spout and allows users to conveniently brew loose leaf tea on the go or make campfire coffee. The thinksport insulated bottle is a high-quality insulated sport bottle for about the same price as the other guys? basic single-walled bottles. thinksport bottles are made of 18/8 medical-grade 304 stainless steel and do not have any type of potential harmful liner. thinksport products address the growing concern of toxic chemicals leaching from consumer products. All thinksport products are free of bisphenol-A (BPA), lead, PVC, phthalates, melamine, nitrosamines, and biologically toxic chemicals. How do you care for my thinksport bottle? thinksport recommends hand washing your bottles, however bottles are dishwasher safe, be sure to remove the cap and strap first. thinksport Stainless Steel Insulated Sports Bottles are great for the beach, tailgating, bicycling, camping, gym, and for keeping your drinks hot or cold at the office. Size: 350ml (12oz), 8? x 2.5? wide. Great for keeping one at home and one on the go.