A midweight crew base layer guaranteed to warm your core. The Men 's Midweight 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. It 's an under layer that punches well above its weight in the warmth department. Le Bent Midweight Crew Base Layer Mens | Black | Large | Christy Sports