The Blue Ice Helmet Holder is an elasticated nest that can be attached to all Blue Ice backpacks using four hooks, two of which can be adjusted to suit your needs. It will accommodate both climbing and ski helmets when you don't need it on your head. You can then enjoy your activities without worrying about it falling out of the nest. Elastic material. 4 attachment hooks, two of which are adjustable. Can be attached to all Blue Ice backpacks. Fits all climbing or ski helmets.