The Firefly is a large-capacity, 2500 cubic in. wildland pack. With 
two quick zips you can drop the gear bag. So whether you're working near
 equipment or out in the wilderness, the Firefly™ does it all. Features 
fusee pockets, a fire shelter or SAR case with huge side pockets for 
water or accessories and a hydration reservoir pocket. The superior 
ergonomic support harness offers comfort and true MOLLE system 
compatibility on the hip belt that conforms to the 1" MOLLE webbing 
standard.
Features
- Hip Belt and Harness offer superior ergonomic comfort
 - Waist belt upgraded to true MOLLE system
 - Compatible with all MOLLE accessories and fire shelter
 - SCS™ patented load-trapping suspension
 - Quick-Zip Removable gear bag
 - 100oz (3L) Hydration pocket (reservoir not included)
 - Removable New Generation Fire Shelter case (fits Standard & Large shelter)
 - Side Pockets hold two 1L Bottles
 - 18 Fusee carrying capacity
 - Dimensions: 16" x 10" x 6.5" (40.6cm x 25.4cm x 16.5cm)
 - Interchangeable SAR Case Available