Apple Watch Bands Size Guide

1.  Find The Apple Watch Size

  • Flip your Apple Watch over — you’ll see the size (in millimetres) engraved on the underside.



    It will read something like: 38mm, 40mm, 41mm, etc.

2. Choose the Right Band Size

Match your Apple Watch model with the strap size below:

  • Your Apple Watch Size

    38mm / 40mm / 41mm / 42mm (Series 10)

    42mm / 44mm / 45mm / 46mm / 49mm (Ultra)

  • Strap Size to Purchase

    • 38–41mm
    • 42–49mm

Rest assured, Luna & Lume bands are designed to fit snugly and securely within each compatible range.

3. Check Your Wrist Size (Optional)

Match your Apple Watch model with the strap size below:

  • Want to make sure the band fits you as beautifully as it fits your watch?

    • Use a soft measuring tape and wrap it gently around your wrist.
    • No tape? A piece of string and a ruler will do the trick.
    • Measure in millimetres — this is your wrist size.

    Now you can shop your new Luna & Loom band with confidence ✨

Still unsure? We’re here to help. Email us at hello@lunaandlume.com and we’ll guide you every step of the way