Compatible for most 3L hydration system.
ID Velcro on the lid.
Adjustable shoulder and chest straps
2mm padding for better keeping the heat.
Two way zips.
Velcro attachment inside for easy hanging the bladder on.
Can be fitted to MOLLE platform with the shoulder straps.
Option for Cordura or Rip Stop Fabric.
Can also be used as a small rucksack with bladder.