DURABLE DESIGN: Each blade refill lasts up to one month (based on twice/week shave); just use and replace when you're ready for a new oneSAVE TIME: These refills have 3 built-in blades, shaving hair quickly and effectively. Shave right, not moreSOFT SHAVING: Made with protective elastomer comfort cushions around the bladesFeatures a blue indicator strip that fades when you’re no longer getting the optimal shaveAny Venus blade refill fits any Venus razor handle (except Simply Venus and Venus Pubic Hair Razor)