The bathroom and kitchen mats are adjustable with snaps to fit most common sink sizes and shapes. The bathroom mat works best with standard undermount sinks that are 14 inches to 21 inches wide and counter length of 20 inches to 24 inches. The kitchen mat works best with standard kitchen sinks that are 2 inches to 33 inches wide, and counter length of 24 inches to 29 inches. The mats are designed to hang off the counter a few inches to absorb water splashes keeping your clothes, cabinets, and floors dry.