For rugged outdoor use look no further than a native British breed, a Jacob can be striking with well defined black patches against white, with softer hair in many cases than a Herdwick, they are a premium option, a large luxurious sheepskin.
Herdwicks are a phenomenal sheep, one of the first to populate the British Isles and very hardy. For outdoor events and camping go for a Herdwick sheepskin, with plenty of bulk and a courser outer hair profile they will serve you at any time of year. The slightly courser hair is comfortable and the skins are large – glorious for a night under the stars.
Shetland sheep are smaller and as such their sheepskin is compact, offering a compromise between luxury and rucksack space. You get every bit of depth in a smaller footprint. The same great “shake it off” ability with the local climate is evidenced in the Shetland, and a dry head rewards the camper who made room for one of these authentic British rare breed skins.
There is a reason ancient Britons used sheepskin, modern scientific methods help us understand how sheepskin handles wet British weather. [tldr: sheepskin handles the weather like it evolved for it]