Find Your Perfect Fit!

ALL Sizing kits are buy one get one 50% off

To guarantee the best fit for your nails, we offer sizing kits for purchase. This option minimizes any room for error, ensuring that each nail is perfectly sized for a flawless fit. When your nails fit just right, you can enjoy a stress-free application that lasts longer, allowing you to shine with confidence.

Investing in a sizing kit is the best way to achieve that salon-quality look from the comfort of your home. With the right size, you’ll experience all-day comfort and beautiful results that stand up to your busy lifestyle. Say goodbye to worrying about your nails coming loose or not fitting properly—our sizing kits are designed to help you feel fabulous, effortlessly!

Sizing Kits
close up of a clear luxury custom press on sample nail being held over the natural nail (natural nail shows through the clear nail). Thumbs hold this nail down while showing the clear flush and seamless fit along the sidewall of the nail and underneath the cuticle line.

How to Use Your Press-On Nail Sizing Kit (Step-by-Step)

What You’ll Need

  • Your BYN sizing kit (includes sample press-ons in all sizes and a cuticle pusher)
  • A pen
  • The size record card included in your kit
  • Good lighting (natural light is ideal!)

Step 1: Push Back Your Cuticles

Using the cuticle pusher included in your kit, gently push back your cuticles. This creates a clean, open nail bed and ensures the press-ons sit flush — not overlapping your skin.

Step 2: Size One Nail at a Time

Pick up one of the press-on samples from the kit and place it over your natural nail. Start with your thumbs and work your way across each hand.

Make sure the press-on sits comfortably side to side, covering the full width of your nail bed without overlapping your skin

✧ It should feel flush but not tight.

✧ You should be able to gently tuck or glide the bottom edge just under or along your cuticle line — this helps give a seamless, natural look when your final set is applied.

If It’s Too Small:
  • The sides of your nail will be exposed
  • The tip may feel tight or pinch
  • You may not be able to line it up properly with your cuticle
 If It’s Too Big:
  • It will press into your sidewalls or overlap your skin
  • It may feel bulky or pop off prematurely

Step 3: Write Down Your Sizes

Once you find the perfect fit for each nail, write that size down on the size record card provided.

Do this for both hands — sometimes they’re slightly different, and that’s totally normal.

Your sizing should look something like this:

Left Hand: 1 – 5 – 4 – 6 – 8

Right Hand: 1 – 5 – 4 – 6 – 9

When You’re Done

Once you’ve recorded your sizes, you can:

  • Send us your sizes through the order form when you shop
  • Enter your sizes when choosing a predesigned set
  • Or DM/email us a photo of your size card (if you’re unsure, we’ll double-check!)

Still Have Questions?

We’re always here to help. If you’re unsure about a fit or want a second opinion, just reach out! You deserve a set that feels as good as it looks.

Guide to sizing your fingers for press-on nails: Discover different methods for accurate nail sizing, including measuring techniques and tips for a perfect fit.

Tape & Ruler

Goal

Measure the widest part of your natural nail in mm.

Measuring with Tape

  • Use clear tape and lay a piece over your natural nail, adhering to its shape as uniformly as possible.
  • Take a pen and mark the sidewalls at the widest part of the nail.
  • Once satisfied with the markings, remove the tape and lay it down on your ruler.

Recording Measurements

Measure in mm and write down your measurements on a piece of paper for all 10 fingers.
Be sure to note each finger on BOTH hands, as it's common for nails to differ in size from hand to hand.

Let Us Know

When selecting your choice of design, add your measurements in millimeters (mm) in the notes section.

Helpful Hints
  • It’s common for the ring and pointer fingers to be the same size.
  • If you’re unsure of your measurements, don’t hesitate to contact us for help or purchase a Sizing Kit for 100% accuracy.
Watch A Tutorial!

Please Keep In Mind...

Using alternative sizing methods may introduce room for error, which can affect the fit and wear of your press-on nails. For the most accurate and stress-free sizing experience, we highly recommend purchasing a Sizing Kit. This ensures you get the perfect fit every time, allowing you to enjoy your beautiful nails without any worries!