Your first step to nails that actually fit

Why your sizing kit is the secret to press ons that stay on and look incredible

This isn't a formality, it's how we make sure every set we handcraft for you fits like it was made for your nails. Because it was.

$10
Cost of your sizing kit — credited back on your first set
50% off
Additional shapes & lengths when bought together
2–3 wks
Average wear time when your nails fit correctly

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Press on nails aren't one-size-fits-all and that's the whole point

You've probably seen press ons that pop off after a day, gap at the sides, or feel uncomfortable. Nine times out of ten, the culprit isn't the glue, it's the fit. Getting your exact sizes before we handcraft your set is how we eliminate that problem entirely.

At BYN Beauty, every set is made custom to your measurements. That means we need your actual nail sizes! Not a guess, not a "medium," and not sizes from a different shape or length.

Each shape fits differently
The inner curve, width, and taper of a round nail is completely different from an almond or square — even if the size number looks the same.
Size numbers don't transfer
A size 4 in short round is not the same as a size 4 in medium almond. Using the wrong sizes leads to gaps, pressure, and pop-offs.
Length changes your fit too
Short and medium versions of the same shape still fit differently. Your kit must match the exact shape and length you're ordering.
One kit, forever yours
Once you have your sizes for a shape and length, you never need to measure again. Ordering that style in the future is instant.

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WITHOUT your sizing kit

❌ Guessing your sizes

❌ Nails that gap or feel tight

❌ Pop-offs before the week is out

❌ Wasted money on a set that doesn't fit

❌ Frustrating first experience

WITH your sizing kit

✔️ Exact measurements on file

✔️ Nails that fit flush and feel comfortable

✔️ 2–3 weeks of wear

✔️ Confident ordering every time

✔️ A set you'll actually want to show off

Here's how the pricing works in your favour

$10 back on your first set.
Your sizing kit costs $10. Your first custom order comes with $10 off — meaning your kit effectively costs you nothing in the long run.

Buy one kit, get up to 5 more shapes/lengths at half price.
Love almond but curious about square? Grab both at the same time and save. One purchase, multiple styles unlocked forever.

Your kit must match your order exactly

If you're ordering...
Short Round
Medium Almond
Multiple Styles
You need a sizing kit for
Short round — not medium round, not short almond
Medium almond — not short almond, not medium square
One kit per shape and length (50% off extras when ordered together)

Ready to find your perfect fit?

Not sure which shape or length is right for you? Start with our Shape & Length Finder Kit to explore your options — then you can order with total confidence. Or reach out and we'll help you figure it out.

Shop sizing kits

Questions? DM us on Instagram or send us a message. We're always happy to help you get started!