Derwent Studio is a colored pencil from Derwent, a British pencil maker. It has a fairly thin 3.5mm lead and a 6.9mm hexagonal barrel that is easy to hold, and it suits detailed work. Its colors follow the Derwent Artists range, with a thinner lead and barrel.
The range has 72 colors. Sets come in metal tins of 12, 24, 36, and 72 colors, and in wooden boxes of 48 and 72 colors.
The thin lead helps when you color small patterns or fill in around fine lines.