The Molotow ONE4ALL 627HS is a highly opaque, UV resistant (on nearly all surfaces), semi-gloss acrylic marker with a 15mm broad nib that is quick-drying for both indoor and outdoor use. These markers are also refillable and compatible with Molotow spray paint. Besides mixed media, the acrylic ONE4ALL Crossover markers are ideal for the design of ornamental items for thick, broad strokes.