Spillproof and odorproof, the Nalgene 12 oz. Grip 'n Gulp is one tough water bottle and a great way for little kids to reach new heights. Side indents are easy for tiny hands to grasp. Rubberized lid and smooth plastic mouthpiece make drinking comfortable. Superior threading on cup and lid is engineered to prevent spills. Lid loop can be clipped to backpack, diaper bag, or stroller. Made from Eastman Tritan, a copolyester that is manufactured without BPA. Durable Tritan resists odors, stains, and residue. Cup, lid, and removable sipper valve are all top rack dishwasher safe. 12 oz. 355 mL cup is compatible with other Nalgene closures OTG, ATB, and wide mouth. Recycling code on this product is 7 for other.