【Replacement Blue Leather Strap for Cartier Ballon Bleu – Convex End Calfskin Band】 – Precision-engineered replacement strap (蓝色凸口真皮表带) designed for Cartier Ballon Bleu de Cartier series. Features the signature convex end (凸口) that seamlessly integrates with the Ballon Bleu's distinctive pebble-shaped case architecture. Available in 18mm, 20mm, and 22mm convex sizes – compatible with 33mm, 36mm, and 42mm case diameters. Crafted from premium calfskin leather (牛皮) with a blue finish and refined texture. with butterfly folding clasp (折叠扣) option. Essential upgrade for refreshing your Ballon Bleu with a sophisticated blue leather touch.
Perfect Fit for Ballon Bleu Series – Specifically engineered for Cartier Ballon Bleu de Cartier references. Available convex sizes:
16凸8mm: Fits 33mm case
18mm / 11mm: Fits 36mm case
20凸12mm: Fits 42mm case (large models)
14mm / 8mm: Fits 28mm small models
Premium Calfskin Leather Construction – Crafted from genuine 头层牛皮 (top-grain calfskin) – not thin pressed faux leather. Features a blue finish with refined grain texture that complements the Ballon Bleu's elegant aesthetic. The leather is naturally breathable – cooler than metal in summer, warmer in winter. Soft and comfortable for all-day wear. The convex end eliminates gaps – ensuring a flush, OEM-quality fit.
Butterfly Clasp Option – Available with butterfly folding clasp (蝴蝶扣/折叠扣) for secure, one-handed operation. Press to lock – just press and click. Protects the strap from repeated bending, extending strap life. Also available with original-style pin buckle upon request.
Multiple Blue Shades – Choose from various blue tones to match your style:
Deep Navy Blue – Classic, sophisticated
Royal Blue – Bold, eye-catching
Light Blue – Fresh, casual elegance
Compatible with Original Buckle – Designed to work with your original Cartier pin buckle or deployant clasp. Simply swap the strap and reuse your existing hardware – no need to purchase additional accessories.
OEM-Spec Alternative – Precision-crafted to match original Cartier specifications. A cost-effective solution compared to OEM Cartier straps. Note: These are aftermarket replacement parts, not genuine Cartier® parts.
Easy Installation – Direct replacement for the original strap. Quick-release spring bars allow for effortless installation in seconds. Complete with spring bars included.
