Retailer Category: Womens Base Layers Brand: Orca Orca Core Flex Rib S/S T. Womens Base Layers. The Flex Rib is a versatile active wear essential you can wear as a base layer or by itself. Cut from a performance-grade ribbed jersey 100% New Zealand Merino wool, which has high natural elasticity and feels great next to your skin. Merino is .... £19.00 Add to my Running bag