Displays2go Portable Outdoor Signs Black Plastic Constructed Write-On Marker Boards, Glossy Black, Double Sided (BSW36PMABK) Legs can hold sand to weigh unit down. Glossy black plastic 24" x 36" write-on surface is designed for use with liquid chalk markers. Molded carrying handle for portability. Durable black plastic construction for outdoor use. Displays2go SKU No.: BSW36PMABK