The women's-specific 8.1 litre capacity UD Race Vesta 5.0 features increased adjustability with UD's updated Comfort Cinch™ 2.0 technology system providing a customised fit with quick fine-adjustment whilst running. Now reservoir-compatible, the rear compartment can accommodate up to a 2 litre bladder. 4-way stretch fabrics maximize storage, stabilise contents, eliminate bounce to reduce chance of rubbing, irritation and chafing, and increase abrasion resistance and durability. Trekking pole holsters hold z-poles firmly in place, minimizing bounce and snapping out of the way when not in use. Two updated Body Bottle III 500 soft bottles are included. Large reflective logos for high visibility in the dark from the front and rear.