The lid can be used for convenient color mixing. Remove the half-pans and use the tin as a watercolor travel case. Durable Empty Watercolor Half-Pans: Each sturdy half-pan locks into place inside the tin to keep your paints from jostling about whether the tin is in your bag or backpack.
Arteza Empty Half-Pans in Tin Box Art Supply Set- 48 Pack
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Fill these white plastic half and full pans with your own tubed watercolors to make a custom paint set for travel or in the studio. Pair with Empty
Empty Watercolor Pans & Half Pans