Gap Fillers easily fit around the perimeter of the mattress to help eliminate gaps and prevent potential injury, including head or limb entanglement. Zippers allow multiple gap fillers to be connected. Made of durable soft foam; vinyl cover is antimicrobial to protect the fabric. The Gap filler is an excellent add on product when using the Posey Siderail Wedge. Meets CA #117 flame retardancy standards. One pair per package. Measures 35in Length by 6in Height by 2in Depth.