Osprey hydraulics hose magnet kitthe innovative hydraulics hose magnet kit allows you to connect the bite valve of your osprey hydraulics system to the sternum strap of your rucksack this means the hose and bite valve remain in place when not in use unlike other drysacks they have a rectangular shape which results in efficient packing when removed from your backpack theyre able to stand unaided featurescompatible with hydraulics reservoirengineering grade plastic clip and magnetbuyospre