You can often see the words ribbed and protection in the same sentence but not generally when you’re talking about a woolly hat. The Ski Beanie howver uses ribcap technology to protect your bonce when you’re out on the piste. So how does the Ribcap work:

Ribcap is a woollen beanie cap with sewn-in protectors. The impact of energy rich electrons includes a rearrangement and creation of additional molecular cross-links within the Structure™ foam, this results in a transition of the foam from a flexible into a semi-rigid or even rigid state.

You can buy the Ski Beanie from Kit 2 Fit with prices starting at about £50.