More freedom, more comfort, more miles. The Agile 500 Belt Set is ideal for long trail runs where agility is paramount, with a stretch fit that lets you move, and easy access to soft hydration flasks and essentials. A stretchy fit and soft materials stretch the pack around your hips, maximizing stability and upper body freedom. Salomon call it Sensifit, you'll call it the most comfortable hip pack you've ever worn. The most lightweight way for endurance athletes to carry 500ml/17oz on the trail. Pockets and compartments: 1 back expandable zipped pocket, 1 front expandable pocket. Hydration: Soft flask included (500ml/17oz). Pack weight (g) 160, (lb oz) 5.64 oz. Material: Mesh.