5cm inch width blade makes the shaving quick and easy. Adjustable 24-29cm curved handle help reach any sections of body. The razor covered by skin-friendly safety plastic teeth; protect your skin from scratching or pain. LOW COST: No worry about future purchase on the replacement, no extra 10 dollars on specific new blade head, only a few pennies on the razor with universal size. Also the double edge halved the cost for the refills. WET& DRY: The blade head designed to work in both wet and dry situations; you can finish your body trimming without worry about where or when. Sturdy shaver made from ABS plastic and lightweight steel covered with waterproof coating. EASY REFILL: Simply twist the head to remove or re-install the head, take off the locker on both side of the head, then you can remove or change side of the razor easily, install the new razor from side to side, done within 30 seconds. Material: Blade: Stainless Steel Handle: aluminum alloy Blade: plastic Steps for usage: 1. Install the cutter head on the handle 2. Adjust the handle length as needed: 3. Gently place the bottom of the cutter head close to the back, slowly pull the cutter head up and down, and start shaving the back hair (do not press the cutter head too hard to avoid scratching the skin) 4. After use, clean the cutter head with water or a towel and dry the water stains on the cutter head Kind tips: 1. The sharpness of the blade is high, so be careful when using it. Do not touch the blade directly with your fingers, and do not press the blade too hard to avoid scratching the skin 2. After using the product, please wipe off the water stains on the cutter head and store it in a dry environment 3. Do not give the product to children to play with 4. The use time is long. If you find that the cutter head is not sharp enough, it is recommended that you buy a replacement cutter head packing list: 1. Blade 1 2. Handle 1 4, 3 blades