WATCH RITUAL
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Fit and sizing · 2 min read

Watch strap materials compared: leather, rubber, NATO, canvas and metal.

Choose a strap for how you will wear the watch. Leather suits dress and everyday wear but does not like water, rubber and FKM are best for swimming and sport, NATO and canvas straps are light and easy to change, and a metal bracelet is the most durable all-rounder. The same watch can look and feel completely different on each.

By Sebastian Bassolino, Editor · Updated October 26, 2026

At a glance.

MaterialBest forWaterCare
LeatherDress and everydayAvoidKeep dry; replace when worn
Rubber / FKMDiving, sport, summerGreatRinse; wipe dry
NATO / nylonCasual and field watchesFineMachine-washable on many
CanvasField and vintage looksFairAir dry
Stainless or titanium braceletAll-round daily wearGreatOccasional cleaning

Leather.

Leather is the classic choice for dress watches. It softens with wear and gives a warm look, but sweat and water age it quickly. Tissot’s Classic Dream is sold on leather for that reason.

Rubber and FKM.

FKM is a fluororubber that resists sweat and does not yellow as easily as some rubbers. THORN’s T008 comes on a custom-molded FKM strap and the T018 on an imported FKM strap.

NATO, canvas and bundles.

NATO straps pass through the spring bars and under the watch, so they are secure and cheap to change. They suit field watches such as the A11. Check lug width first with our strap sizing guide.

Metal bracelets.

A bracelet is the durable default. Titanium bracelets, such as the one on the THORN SHY037, keep the weight down. Bracelet and strap types explains the clasp and link styles.

Choose a real strap around the material and the fit.

We like a material shortlist that also respects the attachment: a straight-end quick-release strap, a standard spring-bar strap and a model-specific made-to-order strap are different purchases. Compare the exact lug width, strap length and buckle finish before choosing. These are useful examples for different looks and fitting needs.

Exact strapWhere we would start
Ritche Sports Nylon, 22 mm BlueQuick-release nylon for a casual or field-watch look; check the listed wrist range.
Ritche Smoke Grey Sailcloth, 22 mmA thicker, textured option with a silver buckle; compare its 4 mm profile with your case.
Ritche Toffee Brown Leather, 20 mmA warm leather finish with a black buckle for a standard 20 mm lug opening.
Ritche Classic Silicone, 20 mmA plain black silicone choice with quick-release bars and a narrower buckle end.
Chrono Straps UK Rubber Diver 9050, 22 mmA long, plain rubber/resin strap with standard spring bars rather than quick release.
Epoch Speedmaster Black FKMA model-focused FKM option; specify the exact reference or lug configuration with Epoch.
Epoch Tank Saffiano LeatherA structured leather look for the matching Tank version; choose its specific size.

For an Apple Watch connector or a case-and-band, use our Apple Watch band buying guide instead of applying conventional lug-width sizing.

Watches with notable straps.

A few good questions.

What is the best watch strap material?

It depends on use: leather for dress, rubber or FKM for water, NATO for casual and a bracelet for all-round durability.

Can I swim with a leather strap?

It is better not to. Water and sweat age leather, so switch to rubber, FKM or a bracelet.

What is FKM rubber?

A fluororubber used for watch straps that resists sweat, chemicals and yellowing.

What lug width do I need for a strap?

Measure the gap between the lugs and match the strap width; 18, 20 and 22 mm are common.

How we write guides: we explain watchmaking from manufacturer documentation and published standards, and say plainly where numbers vary by brand or movement. Our approach.