This is a set of 9 high quality rings in 3 different sizes ranging from 9.8" - 17.7" diameter. The different sizes are color coded for each recognition. They are great both indoors and outdoors for a range of individual and group activities. Roll them, sort by color and size, sort materials inside them, throw bean bags into them or use them in imaginative play. Use language to compare size such as small, smaller, smallest and large, larger and largest. Each ring includes braille (small, medium or large). Made from durable plastic with a textured surface and supplied in 3 colors. Age: 12 months+. Recommended age 12+ months