+2 Features: more lubricants + larger skin guard (vs Gillette Mach3). Pack lasts up to 10 mos (Based on average days' use per cartridge). Enhanced lubricating strip (vs. mach3). Advanced pivoting head (vs Gillette Customplus/Sensor2 disposable). Superior cartridge geometry (vs Gillette Customplus/Sensor2 disposable). Larger skin guard (vs. mach3). Individually spring mounted blades. Nano-thin blades. The best a man can get. All Mach3 Cartridges can be used on all Mach3 razors. Comments? 1-800-Gillette. www.Gillette.com.