Perfect fit with wooden rainbow stacker as an open-ended learning educational toy for kids, baby, toddlers,and also suitable for an adult to relax these gorgeous toys can capture the imagination while improving children's knowledge of the world,expand their reasoning, creative abilities, fine motor skills, and patience Size: 11 Colors Rainbow Rectangle: 15 IN (L), 2.8 IN (W) 11 Colors Rainbow Semicircle: 14.6 IN(D), 7.3 IN (R) These rainbow building boards will let kids engage in placing the blocks in a myriad of creative ways and busy for hours instead of being mesmerized by electronics. Ideal gift for birthday, Christmas Day, Halloween, New Year