The SkinProtect blade gives an extra layer of protections from nicks, cuts and razor burn for sensitive armpit and intimate skin Durable stainless steel blades are designed for lasting performance. For optimal performance, you will only need to replace each blade every 4 months*. Replacement is easy and hassle free. * For best shaving experience. Based on 2 full shaves per week. Actual results may vary OneBlade is fully waterproof (IPX7), so you can shave wet or dry, with or without foam, even in the shower. It is easy to clean, just rinse it under the tap. The dual-sided blade allows you to shave in both directions to easily reach those tricks spots, create clean lines or an extra touch of styling precisely where you want. Now our famous OneBlade technology is ready for your armpits and those intimate regions down below no matter how long you've let things grow. While the quick cutter mows through all that hair at a speed of 100x per second, the rounded edges and bridge of the skin protector and rounded tips protect your skin under there and down below.