Thor Hydrant Hydration Pack. 3 liter BPA-free bladder with an easy clean, big bore top. Magnetic bite valve holder. Thermal lined bladder compartment helps keep fluids cool. Sternum strap and buckle keep gear secured. 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. Micro-fleece lined glasses / media pocket. THOR reflective logo. Durable 500D polyester main body material. Standard dimensions: 16” (l) x 8.5” (w) x 2” (d). Metric dimensions: 40.64 cm (l) x 21.59 cm (w) x 5 cm (d).