The pack is designed as a durable, multifunctional carrier for the hydro system. It accommodates most standard hydro bladders up to 3L (NOT included).
The pack can be used as a small backpack by adding shoulder straps, or by attaching plate carriers to the back using MOLLE/PAL mounts or special adapters.
On the front part of the main compartment there are two flat pockets for small items. Inside the bag there is a divider to separate the hydro system from other contents.