They've drawn an equivalence between the Ilvermorny houses (Thunderbird, Pukwudgie, Wampus, and Horned Serpent) and the Hogwarts houses (Gryffindor, Slytherin, Hufflepuff, and Ravenclaw). And since you can get sorted into a house on Pottermore, some fans are understandably upset that they got sorted into the American Hufflepuff..
Appearance. Shoe molding is straight on the bottom and on the side facing the wall and curves outward on the third side. The bottom of the molding lies on the floor and usually is installed with wood glue and/or small nails. Shoe molding commonly measures 1/2 inch in thickness and 3/4 inch in width.
Uppers are built around a last, which is a mold used to shape the boot's materials. Some boots are made with a single layer of material (single vamp), a double layer (double vamp), or even triple layer (triple vamp) for added insulation and water penetration resistance.