1/ The bottle is made of Eastman Tritan Copolyester. 2/ Angled bottle opening provides the greatest drinking comfort. 3/ Soft-touch curvy carrying handle with the non-slip grip surface. 4/ Innovative drinking-lid anchor slot for maximum convenience. 5/BPA-free materials with 2.4mm thickness that is food safe and high temperature resistant. 6/ Ergonomic and well-balanced bottle shape.