Layering starts here. The lightweight Women’s Core 200 Crew base layers aren’t just any staple thermal. Crafted with performance at the core, these luxurious base layers combine comfort and style in perfect synergy. The Signature Blend of Merino Wool and Rayon from Bamboo naturally works in harmony with your body to regulate temperature and is even beloved by those with merino irritations making it an unrivaled on-skin layer. 4-way stretch, contoured panels, scoop bottom and anti-chafe flatlock stitching all works with your body for maximum performance and ultimate comfort.