Salomon Soft Flask (500ml, 28mm opening) Set of 2. These were included with the company's hydration bag, but I have extras, so I'd like to offer them to someone who needs them. These are unused and unopened, with the high-flow valve seals still in place. [Shipping Method] They will be packaged in a plastic bag and shipped via Yu-Yu Mercari Mail Yu-Packet Post Mini. (Anonymous delivery, delivered to your mailbox) #TrailRunning #TrailRun #UltraMarathon #SoftFlask #Hydrapack #HydrationBottle Capacity...500-999ml