The Hi-Vis Raincover is made from a completely waterproof fabric with fully taped seams. It fits easily over smaller packs & is secured with a drawcord closure. When not in use it will pack up into its own pouch & can be stored in your pack. The Hi-Vis yellow colour adds extra security & the reflective logos on the back are particularly useful on road sections, there is even an attachment for a blinker light.