The Work Ahead warning signs are designed to remind people to be careful of Work In Progress. With bright and visible warnings on both sides to make people aware of the floor that has just been wiped. Fordable A shaped design, does not require assembly, can be folded into a flat shape, convenient for storage and transportation. Suitable for swimming pools, hot springs, SPA, hotels, office buildings, shops and other public places. Good waterproof, it mainly serves as a warning and prevention function to prevent pedestrians from slipping when passing by. Bright yellow plastic floor signs can be read from 30 feet away Two-sided signs ideal for doorways and narrow spaces are Lightweight and versatile. It makes a heavy statement about safety, folding design for convenient storage Caution warning messages printed in English. Folding design for convenient storage or transport on cleaning carts, available for use in narrow areas.Protect customers, employees & pedestrians of spills, leak, snow, & flooded areas to avoid the risk of unfortunate injuries. Place a sign in every direction of the hazardous spot, as well as outside of doors leading to hazards.