It holds 15.5 ounces and is made of BPA-free stainless steel, durable enough for kids to take anywhere they want. The screw-on lid has a built-in carrying loop for easy transportation, and doesn’t leak when it’s closed, so the bottle can be tossed into a bag for worry-free travel. When it’s not being used, the comfortable silicone spout can be covered to keep it clean. The bottle is dishwasher safe and should not be microwaved. Recommended for children ages 3 and up.