Cork is one of our favorite materials. Not coincidentally, it's also one of the most sustainable; the wood is harvested by stripping the outer layer of bark off a cork oak tree, without harming or killing it. Inspired by the simplicity of traditional envelopes, these cork carrying cases are lined with 100% recycled billboard, coming in three sizes: a wallet, a clutch and a handbag. The smaller sizes fit nicely into a purse or handbag, while the largest allows you to leave your bag at home. Another sharp idea from the clever people at Artecnica.