RockTape H2O has an adhesive twice as strong as regular RockTape. It can survive the most extreme water sports from the pool to the wild waters of the Pacific, where it was tested and developed. H2O is a great tape for surfers, swimmers, water polo players, triathletes, and other extreme athletes. RockTape H20 also has a tighter weave and greater elasticity than other kinesiology tapes. It stays on longer and provides better support, even under the toughest conditions. Each roll comes with a poster showing a variety of therapeutic and performance-enhancing applications. H2O is not recommended for infants, geriatric use or anyone with sensitive or fragile skin. Save by buying the 105' bulk roll - equivalent to 6+ single rolls.