Where were the seal (badger) skins used on the tabernacle?

Les teaches that the badger skins mentioned in the offering list were actually seal skins, because the North American badger was not known in the Middle East. He explains that the hides of these seals were to be put on the outside of the little tabernacle tent, and he says he will point this out when they come to it. The skins were part of the materials the Israelites brought, along with gold, silver, brass, blue, purple, scarlet, fine linen, goat's hair, and ram skins dyed red. These materials came from Egypt, where God caused the Egyptians to give willingly of their wealth to the departing Israelites.