Winsor newton cotman water colour sketchers pocket box of 12 colours winsor newton 0390640 p this cotman water colour sketchers pocket box is a popular pocket sized plastic box featuring an integral mixing palette in the lid and contains 12 x cotman water colour half pans and one pocket brush p p the water colours in the half pans have been made to winsor amp newton s high standards yet remains economical thanks to the more costly pigments being replaced by less expensive alternat