Sportime Floor Marker Strength Spot made of non-slip PVC material measures 10 in. and features exercises such as inch worm push-up, one leg up switch, one arm up switch, frozen push-up, wide hand walk and push-up hand walk. It is appropriate for children in elementary and high school and is designed to offer a slightly more difficult challenge than other fitness spots. Set includes two each of red, yellow, blue, green, violet and orange. It is 12 per set.