This 4-pk. of Flip Disposable Inserts makes using cloth diapers in Flip Diaper covers easier than ever. Flip One-Size Disposable Inserts are easy to use, dye- and fragrance-free, and they are the only disposable insert that has achieved Oeko-Tex® certification. Perfect for travel, daycare and those moments when practicality demands something disposable. Because Flip Disposable Inserts are trimmer than your cloth inserts, you may need to use a smaller snap setting on your Flip Diaper Cover to keep the insert in place.