The CamelBak® Reservoir Dryer makes sure your reservoir is completely dry after use or when cleaned. It works with the Crux™ or Antidote® reservoir. FEATURES: Two-piece set Works with the Crux™ or Antidote® reservoir New click-in dryer hangs Crux™ reservoirs and ensures the water completely drains Pure Flow Tube snaps to hanging hook for vertical hanging and draining BPA, BPS, BPF Free