Revoloft Polyester Cluster Fiber Fill - Premium Hypoallergenic Down Alternative - 5 LB. Bag High performance fiber fill made with hollow conjugate siliconized fiber Revoloft provides superior fill power and high loft balance Ultra strong and durable. Fiber can be used for arts, crafts, decorations, stuffing a teddy bear, and more 100% Polyester Filling Our Revoloft filling will arrive to you sewn into a polyester casing for easy and compact storage and shipping