Designed especially for use with thong underwear. Cover allows up to 2x more airflow (vs Carefree Original). End-to-End adhesive and stay put wings keep the Thong Pantiliner in place.The CareFree Promise: Try this CareFree product for 21 days. If you're not satisfied, we will replace or refund your purchase. Just send your original cash register receipt with the purchase price circled, the original UPC symbol from this package, your name, address, daytime telephone number and comments to: USA: PO Box 49243 Strongville, OH 44149-02943. Canada: 890 Woodlawn Road West, Guelph, Ontario N1K 1A5. www.carefreeliners.com. USA/Canada 1-877-408-7223. Made in Canada.