Displays2go Sandwich Board, Silver Aluminum Snap Frame and Gray Plastic Base Outdoor Sidewalk Sign (PS15C33V2) Rugged Steel Springs Reduce Wind Loading. Gray Plastic Water Filled Base for Stability. Built-in Wheels and Handle for Mobility. Silver Aluminum Snap-Open 23" x 33" Poster Frames on Both Sides. Displays2go SKU#: PS15C33V2