Best 24mm Leather Watch Straps (2026): For Panerai and Big Watches

24mm is the lug width of the boldest watches in the market, such as Panerai Luminor and Radiomir, Bell & Ross BR01, and large-case tool watches that make no concession to subtlety. At this width, the strap is a design element, not an afterthought. At JackCoHenry, 24mm commissions are among the most visually demanding we take on, and among the most satisfying to get right.

Which Watches Use 24mm?

What Changes at 24mm

At 24mm, the strap is as wide as a standard men's dress belt is narrow. The material's texture, thickness, and stiffness become defining characteristics — not background detail.

• Thickness matters: A 24mm strap needs enough body to look proportionate on a large case. Thin leather will look undersized and may not hold its shape. 3–4mm total thickness (face + lining) is typical for Panerai-style straps.

• Stiffness: Panerai straps traditionally have a firm hand. A strap that folds too easily will not sit correctly on the wrist under a large, heavy case.

• Pre-tapered vs straight cut: 24mm Panerai straps are often cut straight through (24/24mm) rather than tapered, reflecting the watch's utilitarian design language. A slight taper to 22mm is also common.

• Stitching: Bold, visible stitching suits 24mm — contrast thread or heavy-pitch saddle stitching complements the watch's design.

JackCoHenry's Top Leather Picks for 24mm

European Calf (Side Leather)

• Tannery: European tanneries
• Character: Full vegetable-tanned calf sides with a firm hand and clean natural grain. The traditional choice for Panerai straps — substantial, structured, holds its shape.
• Best for: Panerai Luminor, Radiomir, any watch requiring a traditional militaria-style strap.

Chromexcel (Horween, USA)

• Tannery: Horween Leather Co., Chicago
• Character: At 24mm, Chromexcel's pull-up effect is maximally visible. The leather develops a deeply characterful patina that suits tool-watch aesthetics.
• Best for: Panerai Luminor (especially Bronzo references), Bell & Ross, watches for daily heavy wear.

Badalassi Carlo Wax

• Tannery: Badalassi Carlo, Florence
• Character: Rich, saturated colour from a Florentine tannery. The wax and oil content gives a buttery hand while maintaining body. Ages beautifully at 24mm.
• Best for: Panerai Luminor Due, watches where the owner wants a sophisticated take on the tool-watch strap.

Badalassi Carlo Pueblo

• Tannery: Badalassi Carlo, Florence
• Character: Matte, slightly nubuck-finish vegetable-tanned leather. Develops a natural sheen with wear while retaining a rugged, understated character. 17 colours.
• Best for: Panerai on the wrist for outdoor and adventure use. Also excellent for Bell & Ross square case watches.

El Vaquero (La Perla Azzurra, Italy)

• Tannery: La Perla Azzurra, Italy
• Character: Pull-up Italian calf in earthy tones. Slightly softer than European side leather at 24mm, but with more immediate comfort and a warmer visual character.
• Best for: Panerai worn close to skin, larger watches where comfort across a long day matters.

Frequently Asked Questions

Q. What is the standard strap for a Panerai Luminor?

The original Panerai strap is a straight-cut (non-tapered) leather strap, traditionally in brown, tobacco, or black, with matching or contrast stitching. Most Luminor references use 24mm. A firm-hand leather — European calf side, Pueblo, or Chromexcel — is most appropriate to the watch's character.

Q. Can I use a deployant clasp on a 24mm Panerai strap?

Yes. A 24mm deployant (or butterscotch clasp, in Panerai terminology) is a common upgrade. The deployant attaches to the strap via a spring bar on the short piece, reducing flex and wear on that end of the strap. Panerai offers their own; third-party options in various metals are also available.

Q. My Panerai strap is 24mm but the buckle feels too large — why?

Panerai uses a straight-cut 24mm strap, so the buckle is also 24mm — much larger than on a tapered strap. If the buckle feels oversized for your wrist, a tapered strap (24/22mm or 24/20mm) with a smaller buckle is an option. JackCoHenry can make either configuration.

Q. How long does a 24mm leather strap last on a heavy Panerai case?

A 44–47mm steel Panerai can weigh 70–80g. The strap bears more torque than on a lighter watch. A well-constructed leather strap with saddle stitching and quality leather should last 2–3 years of daily wear. Cheaper straps may fail at the buckle hole within 12 months under that weight.

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