Materials

DNA Bracelet Sizing: Will It Fit? Sliders and Extensions Explained

Every DesigNA bracelet adjusts, either by slider or by extension chain. Here is how each fastening works and what to do if you are unsure.

Spider Pearl Clasp DNA Profile Bracelet with its adjustable slider

Somebody asked us this through the site chat last week, and it is a fair question to want answered before spending 179 pounds on something made specifically for you. A bracelet that does not fit is worse than no bracelet, and unlike a jumper you cannot simply size up.

The short version is that every DesigNA bracelet adjusts. There are two ways it does that, and which one you get depends on the style rather than on anything you need to specify at checkout.

You do not choose a size

This is the part that catches people out, so it is worth stating plainly. There is no size dropdown when you order, and that is not an oversight. Our bracelets are built to adjust rather than to be made to a measurement, which removes the most common reason a personalised piece goes wrong.

You order the style you like. It arrives adjustable.

The spider slider

Our spider bracelets fasten with a slider, sometimes called a spider clasp. Rather than clipping shut at a fixed point, the bracelet runs through a small sliding fastening that grips wherever you leave it.

To put it on, you open it out, slip it over your hand, and pull the ends until it sits where you want. To take it off, you push it back the other way. It holds its position while you wear it and moves when you want it to.

This is the more forgiving of the two. It suits a very small wrist, a larger wrist, and anyone who dislikes fiddling with a clasp one handed. It is also the better choice if you are buying for somebody else and you genuinely have no idea of their wrist size.

The lobster clasp and extension chain

Our clasp bracelets fasten with a lobster clasp, the standard small spring clasp you will know from other jewellery, and they carry an extension chain at the other end.

The extension chain is what gives you the range. Rather than one fixed length, you clip into whichever link sits comfortably, which lets the same bracelet sit close on the wrist or a little looser.

At the end of that chain is our small oval tag with the DesigNA helix mark on it, which also gives you something to hold while you fasten it.

Which styles use which

Spider slider: the Spider Silver Clasp, Spider Pearl Clasp, Spider Silver and Gold, and Spider Pearl and Gold DNA Profile Bracelets.

Lobster clasp with extension: the Pearl Clasp, Silver and Gold Clasp, and all four Twisted DNA Profile Bracelets.

The twisted styles are the fullest in the range, two strands wound into a rope with 5mm spheres, so they sit with a little more presence on the wrist than the fine 2mm styles.

If you are between sizes or buying a gift

We do not publish a printed wrist size guide yet, and we would rather tell you that than invent one. What we would suggest instead:

If you are buying for yourself and you are unsure, choose a spider style. The slider removes the question entirely.

If you are buying for somebody else, again, choose a spider style unless you know their size.

If you have set your heart on a clasp style and you want to check the exact measurements before ordering, message us at sales@mydesigna.co.uk and we will confirm the length and the extension range for that specific piece. We would rather answer a question before you order than sort out a return afterwards.

Does the pattern change with the size?

No, and this is worth understanding because it is the opposite of how most personalised jewellery works.

The laboratory reads 23 markers from your DNA, and the position of each marker is set by your own profile. Those positions are the design. Adjusting a slider or clipping into a different link on an extension chain changes how the bracelet sits on you. It does not change the marker order, because the marker order is not ours to change.

Looking after it

Once it fits, keeping it right is straightforward. Put it on last when you are getting ready and take it off first. Keep it away from perfume, hairspray and swimming pools, since chlorine is unkind to silver and to gold plating alike. Wipe it with a soft dry cloth rather than soaking it.

Sterling silver darkens over time with wear. That is normal, it is not a fault, and a gentle polish brings it back.

Frequently Asked Questions

Do I need to give my wrist measurement when I order?

No. There is no size to choose. Spider bracelets adjust by slider and clasp bracelets adjust on an extension chain, so the piece arrives ready to fit.

Which bracelet is safest to buy as a gift?

A spider style. The slider adjusts to any wrist, so you do not need to know the size of the person receiving it.

What if it still does not fit when it arrives?

Get in touch at sales@mydesigna.co.uk. Because each piece is made from an individual profile we cannot simply swap it for another size off a shelf, so we would always rather you asked us before ordering if you have any doubt.

Is the extension chain the same metal as the bracelet?

Yes, it matches the piece, and it finishes with our small oval DesigNA tag.

Does adjusting the bracelet change my DNA pattern?

No. The order of the markers comes from your profile and is fixed. Adjusting the fastening only changes how the bracelet sits on your wrist.

One of one, made in the UK
Wear your own DNA

Your genetic code, profiled from a simple cheek swab and handcrafted into the exact DesigNA necklace. No two are ever the same.

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The pieces this journal is about

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Before you buy

The questions people ask before they give one.

What is the most meaningful personalised jewellery I can buy for my partner?

A piece made from their own DNA. Engraving, initials and birthstones describe someone from the outside. A DesigNA piece is built from the code that makes them who they are, so it is personal at the level of the design rather than a message added afterwards. The Silver DNA Profile Necklace is £249 and the Pearl is £275, bracelets start at £179, and every piece arrives with a signed certificate of authenticity. One swab each makes two visibly different pieces for a couple.

What are some truly unique anniversary jewellery gifts for her?

The most unique anniversary gift is one that could only ever be hers. A DesigNA necklace or bracelet is made from her DNA and could not be produced for anyone else, so it marks the person rather than the year. The Pearl DNA Profile Necklace at £275 is the piece we would suggest first, and the bracelet range from £179 suits a smaller gesture. Swab early and the whole thing usually takes about three to four weeks.

What is a good one of a kind gift that is not engraved?

DesigNA jewellery carries no engraving at all. The personalisation is the pattern itself: the sequence of stones and spacers is set by the wearer's genetic profile, so nothing is written on the piece and nothing can be copied by reading it. If you want something personal that does not spell out a name, date or initial, this is the alternative.

What are the best DNA gifts in the UK?

DesigNA pieces are one of a kind by construction rather than by limited edition. Each is generated from a single person's DNA, hand made in the UK, and certified against the profile it came from, so two pieces are never the same. Necklaces run from £249 to £299 and £699 in 9ct gold, bracelets from £179, and the DNA Representation Pendant is £80 for gifting without a swab.

Can I buy a DNA necklace as a surprise?

You can surprise someone with the kit, not with the swab. An adult's DNA is analysed only with their own consent, so the swab has to be taken by the person wearing the piece. Most people give the kit as the visible gift, open it together, and the finished piece arrives a few weeks later as the second half.

How far ahead do I need to order for a birthday or Christmas?

Two parts are fixed: 2 to 3 working days for the kit to reach you, then 2 to 3 weeks of making from the day the laboratory has the swab. In between is however long the swab takes to come back, so swab early and it is usually about three to four weeks in all. For Christmas 2026 the order by date is Sunday 15 November. After that, give the kit on the day and let the piece follow.

One of one, for ever

Reading is the easy part. The swab takes thirty seconds.

Order by Sunday 15 November for Christmas.