This black key chain for men and women is designed to be both practical and stylish. It is made of heavy-duty metal, sturdy and durable, not easy to be deformed or damaged, and can steadily carry all kinds of keys, saving you from the trouble of losing your keys and showing the reliable quality in daily use. Unique mountaineering buckle design, convenient for you to easily hang the key chain on the backpack, belt loop and any other place you want to hang, whether traveling, sports or work, access to the keys have become incredibly convenient, so that your rhythm of life more efficient. The built-in bottle opener function is a highlight! No need to look around for a bottle opener when you are gathering with friends in your spare time, just pick up the key chain and open the bottle cap easily, adding fun and convenience to your life and instantly transforming you into a socialite. Equipped with 2 key rings, you can categorize your keys according to the purpose, so that each key can be put in its own place, and you no longer need to fumble around with a bunch of keys, making it a breeze to find keys from now on.