Ulfhednar Hulder Support Pillow Bag Wolf Grey. Filled with fine heavy sand that shapes itself perfectly to both barricade and rifle for the best possible stability. To increase the friction we have put on a sticky wax on outside of the Cordura. The filling may be adjusted trough a secure opening. Specifications for Ulfhednar Hulder Support Pillow Bag: Manufacturer: Ulfhednar Color: Wolf Grey Fabric/Material: Cordura Package Contents: Ulfhednar Hulder Support Pillow Bag Ulfhednar UH201-MK2-LW: Hulder Support Pillow Bag Wolf Grey