Product Price Water Capacity (L) Reservoir Size (L) Pack Volume (L) Weight (g) Bladder Material Tube Length (in) Pocket Count
CamelBak CamelBak Crux 3L Reservoir - 3 Liters
US
£31.91 3 235 Polyurethane

This CamelBak Crux 3L reservoir provides 3 liters of high-flow hydration with an ergonomic handle for easier filling and an on/off lever at the bite valve to help prevent leaks. It uses HydroGuard antimicrobial technology and has a big bite valve that self-seals after each drink, and a quick-disconnect tube system for removing the reservoir for cleaning.

★ Ideal for

If you want hydration packs with the best water reservoir capacity, this 3L Crux reservoir gives a full 3 liters in a single bladder, letting you carry more water for longer rides/hikes than smaller reservoirs.

Nathan Nathan VaporAir 3.0 7 Liter Hydration Pack - NS30390-60270
US
£136.75 2 227

The Nathan VaporAir 3.0 is a lightweight 7-liter hydration vest designed for breathable, comfortable all-day carry. It includes a 2-liter hydration bladder and features multiple storage areas including zippered pockets and an extended kangaroo pocket, plus side loops for trekking poles. It's well-suited to runners and hikers who want a stable, low-bounce vest with capacity for longer outings.

★ Ideal for

For maximum hydration reservoir capacity, it includes a 2-liter bladder, which is larger than many small-run vests while keeping a 7-liter overall pack volume.