CamelBak Arete 18 Hydration Backpack w/ 50oz Reservoir $40 at Amazon $40 $80 Limited stock! Amazon has the CamelBak Arete 18 Ultralight Versatile Hydration Daypack with 50oz Crux Reservoir (Canyon Clay) for $40 with free shipping. $40 retail: $80 Posted by DrBatman06/08/2026 at 07:20 AM PT