Ace Armor Shield Shatter Resistant Screen Protector for the Polar RS300x SD Heart Rate Monitor with free lifetime replacement warranty Engineered and Meticulously made for the Polar RS300x SD Heart Rate Monitor Military Anti-Shock Grade Created from a rare multi-layered Urethane film with Self Healing Technology - Features unique unrivaled abrasion resistance Maximum Screen coverage with unique easy installation methods (WET or DRY) Supreme 99% HD Clarity that is virtually invisible with our Free Replacement Warranty. Protection, Reliability, Longevity and Affordability is what we offer. What's stopping you from getting your Ace Armor Shield today?