The Women 's Core 260 Midweight Bottom crew is crafted with our 260gm Signature Blend fabric, providing enhanced 4-way stretch, superior breathability and thermoregulation, while melding the luxuriously soft on-skin properties of rayon from bamboo and the unrivalled odour resistance of merino wool. Designed to warm your core on cold days. Le Bent Core 260 Midweight Bottom Womens | Gray | Small | Christy Sports