(Unrolling a strip of Ban-Roll in my studio)
One of the best waistband stabilizers on the market is a product called Ban-Roll. It serves as an interlining that is a slightly rigid, canvas-like material used to prevent waistbands from curling or rolling over. It's a definite tailor supply and can be purchased from most tailor specialy/supply stores. It comes in various widths which is perfect for male or female pants. And for convenience and value can be purchased in a 50 yard role (pictured here). If you've never tried Ban-Roll I encourage you to give it a try. You won't be disappointed with the professional result it yields!!!