Insulating fleece overshirt from Craghoppers National Trust Collection. The ideal choice to slip over a tank or base layer, Ribwort is made from deep-pile borg fleece fabric, delivering reliable insulation in cooler conditions. The relaxed styling with centre-front stud fastening and patched-on pockets is perfect for casual days out. 10% of net sales from this collection will be given to the National Trust to help look after nature, beauty and history, for everyone, for ever. Layer up for cooler weather in this borg fleece overshirt from our exclusive National Trust Collection. Ideal over a tank or base layer, Ribwort's deep-pile fabric offers reliable insulation in a casual style that's a winner on and off the trail.