HAZARD 4 Officer Front/Back Slim Organizer Pack Unique pack has a wide, padded belt w/ MOLLE webbing for pouches, etc.; 3D air-mesh underside on straps/belt for breathability Wide, padded belt has MOLLE webbing for pouches, etc.; Full-width flip-down shelf w/ organizer to access on chest Padded back-carrier pocket fits most 15.6" laptops; Back-pocket will also fit hydration bladders (up to 100 oz./3L) EXTERNAL SIZE: ~18" L x 11" W x 6.2" D (46 x 28 x 16 cm); WHAT'S INCLUDED: 1x Sternum strap Main Material: Invista(R) 1000D Cordura