NEW WITH TAGS - NEVER WORN. A warmer, midweight version of our best-selling Oasis, the 260 Tech Long Sleeve Crewe is a go-to piece for winter layering, made with 100% merino wool. 100% Merino wool - Soft, lightweight and naturally odour resistant fibre that keeps you warm when it's cold and cool when it's warm Gusseted underarms for mobility and comfort Offset shoulder seams to help reduce friction Flatlock seams to help reduce friction Backward set side seams to prevent friction Free of plastic microfibres and petrochemical-based synthetics, this product is made with 100% pure merino fibres that were hand-picked for strength and softness to create a luxurious fabric that naturally breathes and resists odours. Merino wool fibre is naturally renewable, recyclable and biodegradable under certain conditions.