The 13.4 litre capacity UD Mountain Vest 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. Sliding rail sternum straps allow on-the-fly adjustment. Ten pockets/compartments on the front for accessible storage and a 270 degree opening main compartment at the rear allows easy access to contents. The bladder compartment can accommodate up to a 2 litre reservoir. 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. Ice axe loops and a safety whistle are included as well as two updated Body Bottle III 500 soft bottles. Large reflective logos for high visibility in the dark from the front and rear.