Flo-Pak® Loose Fill - Heavy-Duty The clean peanut! No breaks! No crumbling! Figure eight design acts as a shock absorber for delicate products. Constructed from 100% recycled polystyrene. All Flo-Pak® Loose Fill is given an anti-static bath so it will not cling to your products. Heavy-duty loose fill has solid centers to protect heavier products. 7 cubic foot bags are UPSable. 14 cubic foot bags ship via truck only