When you are going up mountains or heading into the wilderness, what is your most important clothing? Mountaineer and adventurer Rob Gearing makes the case for under-layers: what to take and what they should be made of. This film is sponsored by Harkila clothing. For more about Harkila go to www.harkila.com
This item appears in Fieldsports Britain, episode 314. To watch the whole show go to Fcha.nl/fieldsportsbritain314
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