Color classification
[Scratch-resistant] walnut color + gray leather
[S-I first layer cowhide] walnut + gray leather
[S-II first layer cowhide] walnut + gray leather
[S-III first layer cowhide] walnut + gray leather
[Scratch resistance] Normcore black + gray leather
[S-I first layer cowhide] Normcore black + gray leather
[S-II first layer cowhide] Normcore black + gray leather
[S-III first layer cowhide] Normcore black + gray leather