The Bell NWT Tanker 400 Hydration Pack is a 1.5-liter backpack designed for hiking adventures. Made with BPA-free materials, this pack will keep your water clean and safe while on the trails. With its durable construction and reliable 1.5-liter capacity, this hydration pack is perfect for staying hydrated during long hikes and outdoor activities. The Bell brand is known for producing high-quality gear, and this hydration pack lives up to that reputation with its practical design and reliable performance.