Hidden Adjustable Open Ring

【Practical Design】This cool ring is very convenient to use. Just press the side button and you can immediately use it as a self-defence ring. Comfortable fit, suitable for all ages.

【Useful Pocket Knife】Adjustable open ring very sharp and solid, good for opening boxes, parcels, envelopes, letters, cartons, cut ropes, straps, paper, plastic, tape, perfect for outdoors, camping, fishing, home, office, emergencies and more.

【Adjustable size】its size is adjustable, you can adjust the size to 16-22 mm to fit different fingers. And it can remember the size, you do not need to adjust it repeatedly.

【Materials and technology】the ring is made of stainless steel and is processed with high precision technology. It is beautiful and durable; it is washable and easy to clean and maintain.

【Exquisite and compact】you can carry one or more. These minimalist handmade pieces look luxurious and radiate beautiful. Suitable for any occasion with a variety of outfits.