1)pu stress dice made of pu 2)Nontoxic and soft ball, Suit to EN71&CE standard 3)Customers' Logo & design are welcome pu dice ,pu stress dice,foam dice1) Size: 6.5x6.5x6.5cm2) Safe material: non toxic and soft for child3) Any color available4) Logo imprinting acceptable5) Custom designs welcomed6) Good quality with low price PU Relax Dice