To help maintain the level of grooming comfort and satisfaction you demand from your shaver, the high-performance blades and foils should be replaced once every year* with genuine, easy-to-install Panasonic replacements blades and foils. Over time, your shaver's blades can become dulled and pitted, creating skin discomfort and a less than satisfying shave experience. After months of daily shaving, the ultra-thin, ultra-smooth foils on your shaver can wear too thin, resulting in a lack of flexibility, less efficient performance and a less than optimal shaving experience. Genuine Panasonic ultra-thin, ultra-sharp blades are made from premium Japanese stainless steel. Each blade reflects the centuries-old traditions of skill and expertise in crafting the high-quality steels once used to create Japan's legendary swords. And, Panasonic blades are hypoallergenic, and precision-honed to a perfect 30° angle for a consistently clean, close and efficient shave. Genuine Panasonic ultra-thin, ultra-smooth and flexible foils are forged from premium stainless steel and are designed, tested and certified to ensure a superior standard of excellence. Panasonic replacement blades and foils are individually designed and assembled to custom fit your specific shaver model. And they install in seconds. Simply remove the worn blade and foils, and snap in the new ones into place. *Based on once daily shave usage of 3 minutes. Replacement schedule varies based on an individuals hair type and thickness and usage schedule.