Flip One-Size Disposable Inserts are easy to use, dye free, fragrance free and the only disposable insert that has achieved Oeko-Tex certification. Perfect for travel, daycare and those moments when practical life demands something disposable. 1.TOSS the used insert into your diaper pail. 2. REPLACE the insert with a clean one. 3. REUSE the Flip cover. The one-size cover and insert adjusts to fit most babies from 7-35 pounds.