The Cotman Field PLUS is a compact & easy to carry set which transforms into the ultimate field watercolour set, containing everything you need to paint outdoors. Constructed in durable plastic with thumb ring, the Field Plus opens to reveal 12 half pans of Cotman watercolours, a Cotman Pocket Brush (No.5), Artists' Sponge, 2 clip-on water pots & a 60ml capacity water bottle. It also offers 3 substantial mixing surfaces, one internal mixing palette with deep wells & two detachable sliding palettes with more shallow wells.