Here are two cases I got today from Amazon for my 15" 2016 Space Gray. Both are pretty cheap but offer good bang for buck.
MoKo PU Leather sleeve - $17.99:
https://www.amazon.com/MoKo-MacBook...GCQM/ref=sr_1_1?ie=UTF8&qid=1480032394&sr=8-1
Feels really nice in the hand. The inside isn't particularly soft material - it's sorta like a canvas material on the inside. Kinda worries me about scratch prevention. Reasonably padded. Flap stays shut with a magnet, but the magnet isn't particularly strong and your MacBook will fall out if you accidentally pick the case up or pull it out of your bag upside down, so be careful about that. Is made for the previous Retina machine but it fits like a glove with the new machine as well.
ProCase Sleeve - $13.99
15" - https://www.amazon.com/ProCase-15-U...8&sr=8-2-fkmr0&keywords=procase+macbook+pro15
13" - https://www.amazon.com/ProCase-13-U...480032572&sr=8-5&keywords=procase+macbook+pro
Again, feels really nice and solid in the hand. No padding offered in addition to the already cushiony main material, but it feels really protective because the material. Made out of a sort've felt kind of material, and has a super soft flannel lining on the inside. Flap closes with velcro so it is a lot more secure than the MoKo. Again, made for the previous Retina machine but the new one fits like a glove as well. The machine doesn't slide around at all - feels like it was made specifically for this model.
MoKo PU Leather sleeve - $17.99:
https://www.amazon.com/MoKo-MacBook...GCQM/ref=sr_1_1?ie=UTF8&qid=1480032394&sr=8-1
Feels really nice in the hand. The inside isn't particularly soft material - it's sorta like a canvas material on the inside. Kinda worries me about scratch prevention. Reasonably padded. Flap stays shut with a magnet, but the magnet isn't particularly strong and your MacBook will fall out if you accidentally pick the case up or pull it out of your bag upside down, so be careful about that. Is made for the previous Retina machine but it fits like a glove with the new machine as well.
ProCase Sleeve - $13.99
15" - https://www.amazon.com/ProCase-15-U...8&sr=8-2-fkmr0&keywords=procase+macbook+pro15
13" - https://www.amazon.com/ProCase-13-U...480032572&sr=8-5&keywords=procase+macbook+pro
Again, feels really nice and solid in the hand. No padding offered in addition to the already cushiony main material, but it feels really protective because the material. Made out of a sort've felt kind of material, and has a super soft flannel lining on the inside. Flap closes with velcro so it is a lot more secure than the MoKo. Again, made for the previous Retina machine but the new one fits like a glove as well. The machine doesn't slide around at all - feels like it was made specifically for this model.
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