Simple design black STUBE necklace. Made of rubber, so it can be used for everyday wear and training. I wore it during my morning run, took it off at the riverbank, moved it to my knee, and did squats. I didn't pull on it too hard. I received another item as a gift, so I'm looking for someone who will become the owner of this necklace. (lol) - Brand: STUBE - Color: Black - Design: Simple circular necklace Thank you for looking.