A drying system for drying a personal hydration system having a fill opening and a supply tube includes a dryer assembly providing a flow of forced air to be introduced into the fill opening of the personal hydration device. The dryer assembly includes seal-forming structure engageable with the fill opening to form a seal between the dryer assembly and the fill opening to enhance the pressurization and inflation of the personal hydration system. The dryer assembly also includes a channel defining a relief valve for permitting exhaust of air flow from the fill opening upon pressurization and inflation of the personal hydration system. The dryer assembly further includes a resilient cam arm for enabling the dryer assembly to sealingly fit variously sized fill openings.