This combination pack includes the genuine-issue Army Combat Shirt, manufactured by Massif Mountain Gear, and the most popular military hydration system, the ThermoBak 3L Omega in ACU Pattern

1.  Army Combat Shirt (ACS) – flame resistant **Official RFI Issue Item**

Made by Massif Mountain Gear Company, this is the only Army approved and certified ACS!

Created with three of Massif's most innovative flame-resistant fabrics, the ACS is the new standard for hot weather combat gear. Lightweight and extremely comfortable torso fabrics increase airflow, reduce chafe, and wick sweat away from your skin. The sleeve fabric provides extra flame, heat, and abrasion protection for exposed areas without sacrificing comfort. Available only for members of the U.S. Military.

• Extensively field tested by the U.S. Army for flame resistance during flash fire simulations.
• Passes rigorous flame testing including the international ASTM standard (F2302-03) for flame resistance.

Army Combat Shirt Features

• Full flame-resistant construction
• 4-way stretch fabrics greatly increase comfort and range of motion
• Flat seams minimize chafing under body armor
• Shoulder pockets with lightweight FR zippers keep gear within reach
• Concealable IR tab helps identify friend or foe
• Loop patches display name, rank, flag, and unit
• FR elbow pads with SuperFabric® abrasion dots offer extra abrasion resistance and flame protection
• Pen pocket on forearm for easy access
• Wrist cuffs adjust for a custom fit
• Approved by the Army for use in aviation
• The Team Soldier seal inside the collar indicates authenticity

2.  CAMELBAK THERMOBAK® OMEGA 3.0 LITER/100 OZ

ThermoBak Omega 3-Liter gives you maximum hydration capacity for longer assignments. Its ergonomic design keeps you comfortable for hours. Low infrared reflective [IRR] buckles, webbing, and materials on the Coyote and Army Universal Camo models provide an edge on the battlefield during night ops. With streamlined features, external fill OMEGA™ Reservoir, and zippered front access panel…operators ask for it by name.  Enhanced features keep CamelBak systems in a class of their own:

• Polyurethane Reservoir is slosh-free and collapses on itself 
• Tethered Screw-Cap closure lets you easily fill the reservoir while providing a positive seal for leak-proof performance 
• Extra-wide, 1.75-inch/45mm opening can be filled with ice cubes for extra-cool hot weather hydrating 
• HydroLock™ Valve provides positive shut off switch for anti-leak security
• Big Bite™ Silicone Valve releases more water when you need it 
• Closed cell foam insulation keeps liquids cooler longer and doesn’t absorb moisture or perspiration
• Insulated Tube Covers on all models 
• Strongest guarantee in the hydration field. Specs: 
• Add or remove nametags and unit badges quickly with integrated Velcro® strips 
• Large exterior fillport with ergonomic handle for filling on the go 
• Zippered front access panel 
• Long Neck Screw Cap Reservoir compartment 
• Stowable straps allow unit to slip easily into larger rucks. 
• Use D-ring attachment points to place unit anywhere 
• Sternum Strap for added stability. 
• 1000 denier Cordura® nylon shell and heavy duty, double-stitched construction 
• D-rings keeps drinking tube close by 
• Convenient Velcro® strap management
• Quick-release straps stow inside built-in pockets 
• Capacity: 100 oz (3.0 L).
• Volume, Cargo Capacity: 126 c.I. 
• Dimensions: 18.5'' x 8'' x 4''
• Weight: Empty Reservoir – 1.8lbs (0.81 kg) 
• Filled Reservoir – 8 lbs (3.64 kg) 
• Optional Chemical Resistant Reservoir will slip into the back pocket easily for extreme conditions.