Ultimate Direction Ultra Vesta XS/S

New Comfort Cinch™ technology provides a custom fit with easy, on-the-go adjustment 4-way stretch material with dissolved thread is lighter weight and stretches to fit more stuff than its predecessor Redesigned trekking-pole holder minimizes bounce and snaps out of the way when not in use Includes two 500ml Body Bottle™ collapsible soft flasks that sit in the front holsters Vest is also compatible with a 1.5-liter (50 fl. oz.) reservoir, sold separately Sliding-rail sternum straps let you customize the fit Front storage holds phone, fuel and valuables