Sweet Sixteen Anniversary Sale. 25% Off - Everything. Through August 16, 2017
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Eternity is turning 16

As our way of celebrating and saying thanks, we are offering a 25% discount on everything in the store through August 16th.

Best of all, you don't need a coupon. You don't even need to be signed in. Just shop.

We'll take 25% off* your entire order when you checkout.

*Discount availble for in-stock items only.

Sizing Guide

Thank you for considering Eternity Collars. We appreciate your business and want to ensure you have a remarkable experience with our products.

We’ve developed this sizing guide to help you find the best fit for your necklace, anklet or bracelet.

While we tried to make our guide as comprehensive as possible, we understand you may still have questions, so please do not hesitate to contact us or call 888-291-2630 and we will do our best to assist you.

Finding the Right Fit

Getting the right fit is important for the comfort, usability and durability of your Eternity Collar, Anklet or Cuff. This guide includes instructions on how to measure and adjust for comfort.


For best results, use a flexible tailors tape to measure your neck, ankles and wrists. These are often available at your local drug store, discount retailers and sewing supply stores.

As an alternative to a tailor’s tape, you can also use a piece of string, thread or other flexible material to measure the circumference and then transfer the measured thread to a ruler or measuring tape to get your measurement.

All of the sizes we provide are based on the approximate INTERNAL CIRCUMFERENCE of our products. The product you select must have an interior circumference larger than your neck, wrist or ankle measurement.

SizeCollar Inside Circ.Fits Neck Size (cm)Fits Neck Size (in)
Petite30.5cm12.0in26 - 2910.25 - 11.25
XX-Small33.0cm13.0in29 - 3111.25 - 12.00
X-Small34.5cm13.5in31 - 3312.00 - 12.75
Small36.5cm14.5in33 - 3512.75 - 13.5
Medium38.5cm15.0in35 - 3713.5 - 14.25
Medium-Large40.5cm16.0in37 - 3914.25 - 15.00
Large43.0cm17.0in39 - 4215.00 - 16.25
X-Large45.0cm18.0in42 - 4416.25 - 17.00
XX-Large47.0cm18.5in44 - 4617.00 - 18.00
XXX-Large51.0cm20.0in46 - 5018.00 - 19.50
SizeInterior Circ.Fits Ankle Size (cm)Fits Ankle Size (in)
X-Small21.0cm8.25in17 - 206.50 - 7.75
Small22.0cm8.50in20 - 217.75 - 8.25
Medium23.0cm9.00in21 - 228.25 - 8.75
Large25.0cm9.75in22 - 248.75 - 9.50
X-Large26.5cm10.5in24 - 269.50 - 10.00
XX-Large29.0cm11.5in26 - 2810.00 - 11.00
Jumbo32.0cm12.5in28 - 3111.00 - 12.00
SizeInterior Circ.Fits Wrist Size (cm)Fits Wrist Size (in)
X-Small15.0cm6.00in14.0 - 14.55.50 - 5.75
Small16.5cm6.50in14.5 - 16.05.75 - 6.25
Medium18.0cm7.00in16.0 - 17.56.25 - 6.75
Large18.5cm7.25in17.5 - 18.06.75 - 7.00
X-Large19.0cm7.5in18.0 - 18.57.00 - 7.25
XX-Large20.0cm7.75in18.5 - 19.57.25 - 7.50

Eternity | Online Retailer and Manufacturer of Designer Locking Eternity Collars, Jewelry and Accessories
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We stand behind our products and fully warrant against defects in materials and workmanship with a lifetime guarantee. What else should you expect from a brand called Eternity? Learn More

If you’re not 100% satisfied, we will gladly accept your return for any reason up to 365 days from the date of purchase for a store credit or a full refund. We never charge any re-stocking fees or penalties for returns. Learn More