Sazac Kangaroo Kigurumi - Adult Costume Pajama Material: Fleece (100% polyester). All of our kigurumi costumes are machine washable and can stand repeated cleanings without losing their shape. 100% Original from Sazac the creator of Kigurumi in Japan. Buy from Global Deals Today to be assured of getting an authentic Sazac Kigurumi. Kids Kigurumi come in two sizes - 43 and 51. 43 (110cm) is perfect for 3 to 5 year olds, while 51 (130cm) is best for 5 to 9 year olds. Adults Kigurumi are One-Size-Fits-All. They are made to be loose fitting and will fit anyone at least five feet tall. New "Adults XL" Size for those 6 feet tall and beyond.