Hermione Granger Cloak - School uniform of Gryffindor House. Here you can purchase a costume set that consists of two parts: a Gryffindor robe from Hogwarts and a plastic wand. Available in various sizes: 4-6 years (equivalent to 104-116 cm), 6-8 years (equivalent to 116-128 cm), 8-10 years (equivalent to 128-140 cm), 10-12 years (equivalent to 140-152 cm).