Features Magnetic bite valve holder Thermal-lined bladder compartment helps keep fluids cool Sternum strap & buckle keep gear secured 2 liter BPA-free bladder with an easy-clean, big-bore top Pack harness is angled away from the underarms, giving total freedom of movement Harness made with air mesh for ventilation Internal mesh pocket for organization Neoprene hydration tube sleeve helps keep fluid cool Reverse-face YKK® water-resistant zip-on front Thor reflective logo 1200D Ballistic polyester/600D reverse-faced poly shell Dimensions: Lx Wx H 16 x 8.5 x 2 inches / 40.5 cm L x 21.5 cm W x 5 cm