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If you're willing to spend a bit of money: http://www.hardgraft.com/collections/13-macbook-air/retina

In particular, this one: http://www.hardgraft.com/collections/13-macbook-air/products/xii-macbook-heritage

Hard Graft makes amazing products, many of which I have.

That said, I just purchased the following yesterday after reading many good reviews: http://www.sfbags.com/products/laptopsuedejacket/laptopsuedejacket.htm

And, you oughta have a look at this thread: https://forums.macrumors.com/threads/1391592/
 
If you're willing to spend a bit of money: http://www.hardgraft.com/collections/13-macbook-air/retina

In particular, this one: http://www.hardgraft.com/collections/13-macbook-air/products/xii-macbook-heritage

Hard Graft makes amazing products, many of which I have.

That said, I just purchased the following yesterday after reading many good reviews: http://www.sfbags.com/products/laptopsuedejacket/laptopsuedejacket.htm

And, you oughta have a look at this thread: https://forums.macrumors.com/threads/1391592/
the first site is gorgeous, like the ralph lauren of macbook sleeves.
loved the £90 one, but no way could I afford that being a student. Im gonna have to settle for this, hope it does the job.
 
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