Hydro Flask Journey 20L Hydration Backpack, S/M Black *No water bag*

Hydro Flask Journey Series 20 L Hydration Pack Fully Adjustable & Waterproof | 3 Liter Water Capacity | Small/Medium *** Water bag and line not included **** Hydroflask's revolutionary Cold Flow System includes the first ever insulated reservoir, neoprene reservoir sleeve with reflective lining and articulated back panel to keep water cold, or above freezing, for over 4 hours