These Colour and shape mats are polyester-topped mats. Can be used for cross curricular activities as each mat has is a different colour and features a different shape. ;. Anti-slip base to prevent movement when in use. Lightweight so can be moved by children. What's in the set?. 1 x Blue triangle on red mat. 1 x Yellow circle on green mat. 1 x Red square on blue mat. 1 x Green diamond on yellow mat. 1 x Purple hexagon on orange mat. 1 x Orange pentagon on purple mat.