Winsor and Newton - Cotman Water Colour Set - Field Box - This exclusive compact Field Box has been designed to be light weight and fit snugly into the pocket while providing everything required for successful outdoor water colour painting. Constructed in durable blue plastic, the Field Box opens up to reveal 12 assorted Cotman Water Colour half pans, a pocket brush, artists' sponge, 3 mixing areas and a 35mL capacity water bottle, clip-on water container and leaflet.