Hydro flask Down Shift Hydration Hip Pack - 5 L
Pros: Water bladder seals well but is difficult to fill. Bladder is well insulated to keep water cool in summer but tube is not insulated and may freeze in winter. Cons: Gear straps poorly conceived with plastic 15 mm g-hooks difficult to fasten, especially with cold hand or gloves. Woojin plastic g-hooks are very weak and broke with first use when I tried to strap my shell to the pack. Aluminum g-hooks would be more durable and a fastex buckle design would be much easier to use in all seasons.




