CamelBak bottle "Podium Chill" model 23 is a polypropylene, insulated slim bottle design that easily squeezes. It features a multi-piece cover for optimal cleaning and a lock-out function for drip-free transport. The self-sealing bottle bite allows for maximum liquid flow. Double-wall insulation keeps liquids cool twice as long as conventional bottles and fits almost all common bottle cages. Trutaste polypropylene guarantees absolute taste neutrality and is free from BPA, BPS, and BPF.