The osprey momentum 26 litre backpack is the perfect commuter pack its the perfect balance between performance and organisation making it the ideal journey to work partner the airscape back system features foam ridges for ventilation so you keep cool on long rides in the city the ventilated stretch yoke and load lifters on the harness combined with the elastic hip belt wing mean that the pack is able to move closely with the body offering extra flexibility and comfort a separate padded l