On the daily route to the office we see them made of leather, canvas, wool felt, plastic or in a mixture of any of these, but you’ve probably not seen one of this. Talk is of those omnipresent iPad cases and this particular one offers the most unusual, but somehow natural solution, a deceptively authentic used envelope. However, this is quite tough featuring a durable tyvek surface, is padded with PE foam, and lined with a red fabric. source