How to measure your lug width and strap length

1. Measure between the lugs

The lug width is the distance between the inside faces of the two lugs, where the strap meets the case. Measure in millimeters with a ruler or a digital caliper.

• Remove the existing strap if it blocks the measurement.
• Read the exact width, such as 18, 19, 20 or 22 mm. Don't round up or down.
• Check the underside of your current strap for a size stamp.

A 20 mm strap belongs on a 20 mm lug. Squeezing a wider strap into place can stop the spring bar from seating correctly.

2. Choose your length

Wrap a flexible tape around your wrist, just above the wrist bone. Keep it snug without pulling tight. The length of your watch case and how you like it to sit also change where the buckle ends up.

The Jib pairs a 120 mm long piece (125 mm from 19 mm up) with a 75 mm buckle piece, and The Bosun has 120 mm and 80 mm pieces. Compare them with a strap you already find comfortable.

3. Fit the strap

1. Lay the watch face down on a clean microfiber cloth and release the old spring bar with the correct tool.
2. Seat one end of the spring bar. On a quick-release bar, pull the lever, line up the second pin and let it click into the lug hole; a standard bar is easiest to compress with a spring-bar tool.
3. Gently pull each strap half away from the case. Neither spring bar should move or come loose. Check again before wearing.

Integrated bracelets and smartwatches

These often use proprietary connectors rather than standard straight lugs, so straight-end straps won't fit them. For smartwatches, see our Apple Watch bands, Garmin watch bands, Galaxy Watch bands and WHOOP bands. Don't assume a fit from the case diameter alone: check the exact watch reference, and ask a watchmaker if the attachment is unusual. Still unsure? Ask us.

Matching widths to materials

After measuring your lug width, pick a strap style that matches your case. Our straps run from 12 to 28 mm, including in-between widths like 19 and 21 mm. For dry wear, explore our Leather watch straps in waxed, perforated or litchi grain finishes. For a casual look, see our sailcloth Watch bands and NATO straps. If you plan to be near water, choose from our Rubber watch straps, The Fathom in FKM rubber or The Fine Mesh in stainless steel mesh.

For further advice on matching different textures to your watch, see our guide on Which watch strap should you choose?.

Hardware and strap profiles

Hardware differs by strap. The Perforated Calfskin is 3 mm thick with a steel pin buckle, The Fathom closes with a stainless steel folding clasp, and The Fine Mesh uses a folding clasp that clamps onto the mesh wherever you close it. The Jib, The Bosun, The Waxed Leather Band and The Fathom come with quick-release spring bars that fit by hand; straps with standard spring bars are easiest to fit with a spring-bar tool.

When maintaining leather straps, keep them away from water, wipe them with a soft, dry cloth, and allow them to rest between wears. The Rally in nylon sailcloth and The Bosun in canvas on silicone rubber can be rinsed in fresh water after salt water or chlorine, then air dried flat.

Ordering and return terms

Delivery is $6.95, or free on orders over $49. The delivery time for your country shows on each product page and at checkout.

If you need a different size after ordering, you can request a return within 30 days of delivery. Return shipping is paid by you, unless the item arrived faulty or incorrect. Read our full policy on our Delivery and returns page.