Multi-Domes have been REDESIGNED! Multi-Domes are 10" diameter x 5" high domes and are fillable at the top. They're constructed of hockey-stick-tough ABS plastic to withstand rugged institutional use. They're light when empty (1 lb.), and serve as very stable and sturdy mini game standards when filled with up to 12 lbs. of your sand or 7 lbs. of water. Use as a base for hurdles, floor tennis, targets, obstacles, hoops, etc. Has slot to even fit Skinny No-Kink hoops! Each dome has 5 pole slots, fitting 1" poles, for multiple obstacles. Set includes 1 dome each of the following colors: red, blue, green, yellow, orange and purple.