The Paint Brush Cover is a unique, airtight, durable plastic cover for your paint brush. Because of its airtight foam seal, it allows you to store a wet paint brush for hours, days, even weeks, without fear of your brush drying out. Independent lab tested! If you need a break for any reason, just place your brush in the cover and snap shut. Come back to it when ready to resume painting, your brush will be fresh and ready to go. No more unnecessarily wasting water or paint down the drain. Once done with your project, clean your brush and let dry, then store your brush in the cover without fear of getting damaged. Fits standard brushes from 1/2 inch - 3 inches.