Most of them are LV waterproof canvas+natural cowhide (color changing part)

Waterproof canvas essence: a canvas material called canvas for oil painting, plus a layer of waterproof PVC.

Many people thought it was leather, and it was all wet.

Except for the leather parts, such as 33 colors, presbyopia, white squares, Haig and coffee squares, they are all so-called waterproof canvas. And really waterproof.