Fjallraven Abisko Wool L/S Tee in Black. Lightweight, long-sleeved top in a soft jersey knit made from merino wool and recycled polyester. Combines the temperature-regulating properties of wool fibres with the durability and moisture-wicking properties of synthetic ones. A perfect first layer in both warm and cold climates, and extra useful on multiday trips as wool naturally resists bad odours.