Lug & Clasp Width
Lug width is the gap between the two lugs of your watch case, where the strap fits. Your strap has to match it exactly.
Most watches are 18, 20 or 22 mm. Measure inner edge to inner edge with a ruler — or flip your old strap over: the width is often printed inside.
Deployant straps read lug / clasp: 20 / 16 mm is 20 mm at the watch, 16 mm at the folding clasp.
Widths we cut
- 16
- 17
- 17.5
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- mm
Common Tank-style pairs (lug / clasp)
Another width? Choose Custom and enter your own.
Clasp width
The width of the strap where the folding clasp sits — the second number. We make clasps in 16, 18 and 20 mm. Measure inside the frame, where the strap passes through.
Not sure? Email support@xilugs.com with your watch’s brand and model — we’ll confirm before we cut.
Strap Length Guide
A deployant strap has two equal halves that meet at the folding clasp under your wrist. 110 / 110 mm means 110 mm on each side.
Wrap a soft tape — or a paper strip — just above the wrist bone. Snug, not tight. Then find your size below.
Find your size
Suggested fit. Watch over 44 mm: go one size shorter. Like it loose: one size longer.
| Each side | Your wrist |
|---|---|
| 95 / 95 mm | up to 15 cm |
| 100 / 100 mm | 15.1 – 15.8 cm |
| 105 / 105 mm | 15.9 – 16.4 cm |
| 110 / 110 mm | 16.5 – 17 cm |
| 115 / 115 mm | 17.1 – 17.8 cm |
| 120 / 120 mm | 17.9 – 18.8 cm |
| 125 / 125 mm | 18.9 – 19.8 cm |
| 130 / 130 mm | 19.9 – 20.8 cm |
| 135 / 135 mm | 20.9 – 22 cm |
| Custom size — over 22 cm | |
Between two sizes? Take the larger one — or choose Custom and enter your own lengths.
Not sure? Email support@xilugs.com with your wrist size — we’ll confirm before we cut.
Straight or curved end?
This is the end of the strap that meets your watch case.
Straight end — cut straight across. Fits almost any watch; a small gap at the case is normal.
Curved end — cut in an arc to follow the round edge of the case, so the strap sits flush with no gap. Tell us your watch brand and model and we’ll match the curve.
Not sure? Choose Straight — it fits everything.
Not sure? Email support@xilugs.com with your watch’s brand and model — we’ll confirm before we cut.
Keepers
The two small leather loops on the buckle half — the strap tail slides through them so it lies flat.
- Match leather — both loops in the strap's own leather.
- Match underlay — both loops in the colour under the holes.
- One colour — one colour for both loops.
- Two colours +$5 — the Top loop and the Bottom loop each in their own colour.
Tap the guide to zoom in — drag to move around.
-
FlatEven thickness, no padding.
2.5–4.5 mm
-
Padded DomedBuilt up in the middle and rounded down to thin edges.
3.5–5.5 mm
-
Padded SquareA raised centre with a flat top and crisp squared shoulders.
3.5–5.5 mm
-
Padded FullPadded edge to edge, the thickest profile.
3.5–5.5 mm
On padded straps the number is the height at the centre; the edges are thinner.
- Thin dress watch (case under 10 mm)2.5–3.5 mm
- Everyday watch (10–13 mm)3.5–4.5 mm
- Sports / diver / large case (over 13 mm)4.5–5.5 mm
A good rule: the thicker the watch case, the thicker the strap can be.
Check the gap between your lugs and the case. Some watches have a tight gap, and a thick padded strap may not fit. If unsure, send us a photo of your watch in the Note / Watch Photo fields and we'll confirm before cutting.
Need a size not listed? Choose Custom and enter it.
Not sure? Email support@xilugs.com with your watch model — we'll recommend one before we cut.
Standard pins, hidden inside the strap. Swap with a spring-bar tool.
Small lever on the back. Swap by hand in seconds, no tools.
Warm honey tan; deepens with wear.
Light neutral sand; stays clean and quiet.
The leather
Epsom Calfskin
The rally strap was made for drivers: the holes cut weight and let air to the wrist through a long stint behind the wheel, and the pattern became the look of motorsport in the sixties. Cut here from Epsom calfskin, whose tight embossed grain keeps its shape and resists the scratches a racing strap collects.
Built for daily wear
Watch Strap Structure
Every strap is built around the three details that decide how it lives on your wrist — not the ones that photograph well.
-
01
Quick release spring bars
Choose quick release or regular spring bars. We fit them before it ships, so you can change straps in seconds — no tools, no scratched lugs.
-
02
Soft Zermatt lining
The underside is lined with soft, water-resistant Zermatt — comfortable against the skin all day, and in warm weather.
-
03
Your name on the lining
Initials or a name, hand-stamped into the lining free of charge, so the piece on your wrist is one of one.
PACKAGING
Every strap arrives in a wooden box
No envelopes, no plastic mailers. Every XILUGS order ships in our own wooden box, lined with a shock-absorbing foam insert that holds up to four straps securely in place. A spring bar tool is tucked inside, so you can fit your new strap the day it arrives, and the box keeps your collection safe long after.
- Wooden box with every order
- Holds up to 4 straps
- Shockproof foam insert
- Spring bar tool included
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