Hydrapak Filter Kit SIS the Aero Singlet combines a

the Aero Singlet combines a double-knit sweat-wicking body and lightweight breathable mesh back to keep you dry and cool so you can perform in comfort

Drink Daily

so you can stay focused on the trail

spending the night under a blanket of starts

Hydrapak Filter Kit SIS the Aero Singlet combines aHydrapak 28mm Filter Kit's versatile connectivity offers a great backcountry water treatment solution whether you are squeezing your water from a Stow into another bottle, gravity filtering your water out of a hydrapak water storage bag or filtering as you drink on the go from a Stow or HydraPak reservoir. (see compatibility in further info below)