Features: you don't need solvents; use water to mix. They don't smell; you can use them everywhere for Plein-air or in small limited rooms—water-mixable oils - drying relatively faster than any standard oil paints. Imprimatur with burnt umber or burnt sienna will dry within 30 min. ⠀
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Only one special moment - most of the colors are transparent, so if you want to avoid the bottom color's transparency, you should apply the top one with a thicker layer. Besides that, because water-mixable oils dry faster, you don't have 24 hrs to wash your clothes if something goes wrong, so you have to reach faster, usually within 2-4 hours after an accident.⠀
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If you add more water, water-mixable oils will work as a watercolor.⠀

• Famous brands: ⠀
• Cobra Artist⠀
• Cobra Study⠀
• Winsor & Newton Artisan⠀

PS: Some people might say that it's not true about solvents for water-mixable oils. In shops, you can find some solvents for water-mixable oils, but using them is unnecessary because you can use just normal water.⠀
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I would recommend it for travel.⠀