Enjoy our award winning base layer bottom formulae in an ultralight boyshort and banish the synthetic underwear. The Women&';s Ultralight Boyshort is crafted in our 160gm Signature Blend fabric offering enhanced 4-way stretch, superior breathability and thermoregulation, and meld the luxuriously soft on-skin properties of rayon from bamboo and the unrivalled odour resistance of merino wool.