The very first suitcases were baskets made from natural materials, next came those made from animal skins and leather. The Otzi the Iceman who was found well-preserved in the 90s and lived in 5300 BC, carried a leather bag suspended in a wood-ribbed backpack. The ancient Romans may have had the first proper suitcases. By the 1800s, the suitcase was made of cowhide stretched over a wooden frame. Over time, vinyl and cardboard, plastic and metal were used for making suitcases as well. Old suitcases are still available today.