Constructed in durable plastic with thumb ring, the Field Travel Set opens to reveal 12 half pans of Cotman watercolours, a Cotman Pocket Brush (#5), Artists’ Sponge, 2 clip-on water pots and a 60ml capacity water bottle. It also offers 3 substantial mixing surfaces, one internal mixing palette with deep wells and two detachable sliding palettes with more shallow wells. It uses the PLUS cartridge system for maximum pan security and versatility.