The Oates Non-Slip A Frame Caution Signs were developed in accordance with feedback from the end user. They have unique patented rubber bumpers on all corners to prevent the sign sliding if stepped upon when laid flat on the floor, helping to prevent workplace injuries to staff and the general public. The lightweight, compact folding design allows for convenient storage on carts and easy transportation between work areas. They are also available in multiple fluorescent colours for added visibility. Product Benefits: Unique, patented rubber bumpers on all corners to prevent sign sliding if stepped on flat Lightweight, compact, folding design allows for convenient storage on carts and easy transportation between work areas Fluorescent colours for high visibility