The i-Run team says
Technologies
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Gamme Warm
Highly functional sports underwear with excellent thermal insulation. Perfect for all winter activities. Keeps the skin dry and warm while providing good moisture transfer.
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Laine de Mérinos
The fleece of the merino sheep is designed to withstand extreme temperatures: It is breathable in summer, insulating in winter, and yet exceptionally soft and lightweight.
In summer, the fine, lightweight, and ultra-breathable fleece of the merino keeps it cool when temperatures reach 35°C.
In winter, it produces an additional layer of wool over its first coat as protection against temperatures dropping to -20°C.