All 133 colours in the range are individually formulated to enhance each pigment’s natural characteristics and ensure the stability of individual colours. Single pigments are used wherever possible. Every Winsor & Newton Oil Colour is made with fine art pigments and formulated to enhance each pigment’s natural characteristics – providing excellent tinting strength and coverage to ensure every colour performs as it should. INTERNATIONAL DELIVERY: International delivery options are available for most locations. Delivery options and speeds may vary depending on item and location. Parcels will typically be sent via ROYAL MAIL and will be delivered by the Royal Mail delivery partner in your location. Delivery may NOT always be tracked, depending on item value, though tracked options will be av.