Strap for Big Pilot Le Petit Prince Bradley Cooper

The lug width of the IWC Big Pilot IW5009-23 is 22mm. This measurement represents the distance between the two lateral lugs on the case where the strap is attached. You can verify this by measuring the inner lug width with a digital calliper or by consulting the official IWC documentation.

For the rose gold Big Pilot, we recommend a vegetable-tanned leather strap, such as Tuscan Leather in Aged Tobacco, which harmonises beautifully with the warm patina of the metal. Alligator leather offers a more formal and structured alternative, whilst shell cordovan in bourbon intensifies the vintage aesthetic. The choice depends on your intended use: daily wear, formal occasions, or technical-sporty environments.

Gently extract the spring bars connecting the strap to the case using a spring bar tool or small precision instrument. Take care not to scratch the case lugs. Once the spring bars are released, slide the old strap away and insert the new one by aligning the holes with the spring bars. Reinsert the spring bars until you hear a distinct click. If uncertain, consult a professional watchmaker.

Yes, any strap with a 22mm lug width is compatible with the Big Pilot IW5009-23. Milan Straps' artisanal straps are specifically designed for this width and offer customisation in leather, adjustable sizing, and choice of stitching thread. The Casati Milano atelier also creates bespoke straps with direct consultation.

A quality leather strap, made with vegetable tanning and artisanal construction, has an average lifespan of 3–5 years with regular wear. Longevity depends on frequency of use, exposure to humidity and perspiration, and maintenance. Leather tends to patina and become more fragile at the corners; Milano Straps offers an 18-month warranty on straps and support for restoration and regeneration.