Isotope Flyway

    Every reference with a known width takes the same strap size. Your reference is engraved on the case back or between the lugs at 6 o'clock.

    18 mm

    From our database, not yet verified

    36 mm case

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    Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.

    Collection10 references
    18 mm
    Illustration drawn to scale: 36 mm case, 18 mm lugs

    Lug widths across the line

    The Isotope Flyway takes a 18 mm strap: all 10 references with a listed width in our database use 18 mm. Check the reference on your case back to be sure.

    Filter references by lug width

    10 Isotope Flyway references

    Isotope Flyway references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.

    • Flyway Atlantic

      18 mm

      Database

      36 mmOcean blue pyramid pattern dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Cayana Blue

      18 mm

      Database

      36 mmCayana blue pyramids dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Cold Grey Enamel

      18 mm

      Database

      36 mmCold grey enamel dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Coral

      18 mm

      Database

      36 mmCoral pyramid pattern dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Fata Morgana

      18 mm

      Database

      36 mmMirror-polished titanium dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Guilloché

      18 mm

      Database

      36 mmLacrima guilloche dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Off‑White Air

      18 mm

      Database

      36 mmOff-white, perforated dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Purple Air

      18 mm

      Database

      36 mmDeep purple, perforated dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Flyway Terra Maris

      18 mm

      Database

      36 mmBrown and bronze degrade pyramids dial316L stainless steel

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    FAQ

    What lug width does the Isotope Flyway use?

    The Isotope Flyway takes a 18 mm strap: all 10 references with a listed width in our database use 18 mm. Check the reference on your case back to be sure. These widths come from our database and are not yet verified.

    Where do these Isotope Flyway lug widths come from?

    From our database, which lists 10 Isotope Flyway references, 10 of them with a listed width. Each reference card says whether the maker lists the width, two independent sources agree on it, or it is not yet verified.

    Other Isotope collections

    All Isotope collections

    Help

    What is lug width?

    The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.

    Measure it in 30 seconds

    1. Take the strap off, or look at the back of it: many straps print their width.
    2. Measure the inside gap between the lugs with a caliper or a millimetre ruler.
    3. Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.

    Strap, quick release or system?

    Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.