FLEX-FILL is a cosmetic filling compound that dries to a semi-flexible state. FLEX-FILL is used to eliminate unsightly wear creases, blemishes. Use like a speckle compound to fill blemish. Allow to air dry (30 minutes), sand smooth and re-color your repair with SURFLEX. A little goes a long way. White FLEX-FILL is for use with white upholstery. Neutral gray is for all other applications.