Hard Graft Card Case

This slim wallet has all that those of us who like to carry light need; great looks, size and simple organization. But as much as I love Hard Graft's work, and the materials they use, I can't help wondering if their use of wool works with a wallet of this size. Leather would age better and synthetics would last. I'm nitpicking - like all the accessories in their catalogue it looks great.
I'm hoping for their fold wallet for iPhone for Christmas.

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