Oral-B Glide Pro-Heath Comfort Plus Floss is extra soft and gentle on gums, yet tough on plaque. Experience the Glide difference with this unique floss that's smooth, strong, and shred resistant. Satisfaction Guaranteed, or your money back. For guarantee, call 1-877-769-8791 within 60 days of purchase with UPC and receipt. Oral-B recommends using Crest toothpaste, mouthwash, and teeth whitening products with Oral-B toothbrush, floss, and mouthwash products for a complete and healthy oral care routine.