CamelBak 100l hydration pack. Issued to me in the Army in 2006. I broke the mouthpiece, they sent me a whole new reservoir, tube, the works. : r/BuyItForLife
Source Hydration Tube and Sawyer Filter Kit
Toygogo Tube for Hydration Bladder Replacement, Premium PP BPA Free Water Reservoir Hose for Hydration Pack, Inner Diameter 7mm : Amazon.co.uk: Fashion
Hydration Pack Water Bladder Drink Tube Replacement or Extension Kit | eBay
Tube Director Kit for The Hydrant and Maternity Hydrant and Most Hydration Bladders. Includes Drinking Tube, Bite Valve, Neoprene Sleeve, Wire Stiffener, 2 Clothing Clips and 2 Velcro Straps : Amazon.co.uk: Fashion