Platypus Big Zip EVO Drink Tube Kit 2L

The Platypus Big Zip EVO Drink Tube Kit 2L is a replacement tube assembly for the Big Zip EVO 2-liter hydration reservoir. The kit includes a 40 in (102 cm) drink tube with a quick-disconnect fitting that lets you separate the tube from the reservoir without spilling water, a HyFLO bite valve tuned for high flow rates, a shutoff valve that stops drips when the tube is disconnected, and a lapel clip for routing the tube over a pack strap. Total kit weight is 77 g. It's aimed at owners of Platypus reservoirs whose original tube, valve, or fitting has worn out or failed — rather than replacing the whole bladder, you swap just the tube kit. All parts are BPA-, BPS- and phthalate-free, consistent with the rest of the Platypus lineup. This is a service/replacement part, not a standalone product, so it only makes sense paired with a compatible Platypus reservoir. For thru-hikers, being able to fix a hydration system in the field without carrying a spare full bladder is the main practical benefit.