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OUR STORY

We are Jack (from Concord, NH) and Cowan (from Boston, MA). Our paths first crossed back in 2002 after our families moved to Los Angeles, CA. Since ,we both have cultivated our passions for motorcycles, tattoos and rock 'n' roll music. By night we performed with local bands on our guitars and eventually formed our own band- JACK & COWAN. By day we helped in several motorcycle repair shops in LA and meanwhile joined a local MC (motorcycle club).

Our lives as nomads on the road and musicians on stage culminated in the birth of a brand we named after our band - JACK & CO. As the brand evolved, its untamed, rebellious nature emerged. Our collection include a variety of exclusive stainless steel, sterling silver pieces and apparels designed for the free souls and wild hearts.

*WHEN YOU BUY ANY OF OUR RINGS OR BRACELETS, YOU ARE Jacked'UP ®  FOR LIFE. THAT’S RIGHT. FOR. LIFE. (CLICK HERE TO FIND OUT MORE!)


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sizing chart

The most common size
The average women’s ring size is 7
The average men’s ring size is 10

How To Measure Your US Ring Size At Home
1. Cut a thin paper or thread

2. Wrap the thread around your finger. Make sure the thread is below the joint of 
your finger and close to your knuckle.

3. Mark the location where the thread meets and measure the distance with your ruler. Use millimeters to measure your circumference.

4. Measure your fingers a few times to ensure the sizing is correct.

5. Use the following chart above to determine your USA ring size.

Measure a Ring You Already Have

If you have a ring that already fits your finger well, you can use a ruler to measure the inside diameter of this ring. Just take your ruler and measure straight across the inside of the ring from edge to edge. Take the diameter measurement in millimeters, and then use our measurement-conversion chart to find your ring size.

Measure a Ring You Already Have

If you have a ring that already fits your finger well, you can use a ruler to measure the inside diameter of this ring. Just take your ruler and measure straight across the inside of the ring from edge to edge. Take the diameter measurement in millimeters, and then use our measurement-conversion chart to find your ring size.

Get Jacked'UP®   (shop now )