The Dilber hat from premium brand Oska is an essential addition to your accessories collection. Crafted from the finest virgin wool, this staple hat is sure to keep the winter weather at bay. Featuring a unique dart design to the front and back, this Oska hat adds classic style in contemporary tonal colours to this seasons wardrobe. Oska 2635-7017 CAP DILBER BOILED WL sale. Wool hat. Beanie hat style. Turn back hem. Dart design features. Boiled wool: 100% virgin wool.