Created using heavy duty, yet lightweight aluminum chain, connected with a high quality finish heart padlock. 

Rainbow and Gunmetal Heart padlocks come with one (1) key.

Silver, Gold and Rose Gold Heart padlocks come with two (2) keys.

Width: 13mm

Please ensure that when you measure your neck, your measurement reflects a comfortable length; not too tight and not too loose - especially not too loose. Ideally, you'll want to measure where you'd like the collar to sit on your neck.