The Zak Designs water bottle holds 16 ounces and is made of durable BPA-free plastic. To help prevent the spread of germs the straw and the comfortable silicone spout are made from antimicrobial materials and the spout can be covered to keep it clean when it s not being used. 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.