Heer's main business is his line of bags, which are inspired by the traditional leather goods both created in and left for repair at his family's workshop throughout his childhood. But he's also recently begun making stools, named Keil after the German word for a wood joinery technique — the straps are woven directly onto the frames, obviating the need for glue or nails. It's all part of his craftsman's love for consistency, and for doing things the simplest way possible, even if it requires more time and technical skill.