Hanse and Bavaria use in lots of designs a vacuum infused sandwich hull (check for Just about every product) and around the Hanse sometimes sandwich bulkheads, bonded and laminated, that provide pros over plywood bulkheads. Although ice skates have drastically improved over the hundreds of years, one thing has not: https://tedomarket.com/product/men/skate-street/black-roller-skating-cowhide-roller-skates-size-adult-kids-boys-girls-skate-street-roller-skates-flash-roller-skates-patines/