A wonderful visual and tactile experience that really does encourage you to move around and explore the surfaces.They are very thin floor tiles with flowing colours that swirl around as you move about on them. They will withstand any amount of jumping on and strenuous use by children and adults as well as the weight of wheelchairs and trolleys. Can also be used on a table top of any flat surface. It only needs a little pressure to create a dramatic visual effect.Each tile is 500 x 500 mm.