- Men's black jumper - Turtleneck, long sleeves - Knitted fabric with fancy stitches - 1x1 ribbing on collar, sleeves and bust - IKKS #actforbetter: material containing 52% polyester certified Global Recyled Standard (GRS) by Ecocert (reference for organic and environmental certification), which guarantees recycled textiles that meet environmental and social criteria The black jumper is a winter wardrobe essential. Adapt your style to the weather with this turtleneck version on a warm knit.