Derwent Watercolour Pencils can be used like a standard colouring pencil or can be mixed with water to create interesting colour flows, like in watercolour painting. Watercolour Pencils allow the artist to create subtle, transparent colour washes and work over with dry colour. You will find them easy to blend and layer, from bold images to delicate washes. Watercolour is NOT permanent so once the colour is dry it can be wet again to rework. 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.