【Replacement Rubber or Leather Strap for Cartier Ballon Bleu – 20x12mm/18mm Convex End】 – Precision-engineered replacement strap (橡胶或真皮表带) designed for Cartier Ballon Bleu de Cartier series. Available in two premium material options – FKM rubber (氟橡胶) or genuine calfskin leather (头层牛皮) – to match your style and lifestyle. Features the signature convex/curved end (凸头) that seamlessly integrates with the Ballon Bleu's distinctive pebble-shaped case architecture. Available in 20x12mm (42mm XL models) and 18mm/18凸11mm (36mm/33mm medium models) – compatible with men's and women's Ballon Bleu references. Equipped with quick-release spring bars for tool-free strap swaps in seconds. The ultimate versatile upgrade for your Ballon Bleu – choose the material that suits your lifestyle.
Perfect Fit for Ballon Bleu 42mm & 36mm/33mm Models – Specifically engineered for Cartier Ballon Bleu references:
42mm XL models (W69012Z4, W6920042, WSBB0015): 20凸12mm convex end
36mm large models (WE902075): 18mm convex end
Also compatible with 28mm small models – available upon request
Choose Your Material – Rubber or Leather – Two premium options to match your style:
FKM Rubber (氟橡胶) : High-performance elastomer – resists sweat, UV, heat, and chemicals. Soft and skin-friendly for all-day comfort. Dust-proof and maintains a clean, high-end finish. Available in Black, Navy, White, Orange, and Baby Blue. Perfect for active lifestyles and summer wear.
Genuine Calfskin Leather (头层牛皮) : Premium top-grain leather with hand-stitched edges and refined grain texture. Naturally breathable – cooler than metal in summer, warmer in winter. Develops a beautiful patina with wear. Available in Black, Brown, Navy, Tan, Red, and White. The classic choice for elegance and sophistication.
Convex End for Seamless Fit – Features the signature convex/curved end (凸头) that mirrors the rounded, pebble-like curves of the Ballon Bleu case. Ensures a flush, OEM-quality fit – no awkward gaps or protrusions. Each size features the exact convex specification matching the original Cartier design.
Compatible with Original Buckle – Designed to work with your original Cartier deployant clasp or pin buckle. Simply swap the strap and reuse your existing hardware – no need to purchase additional accessories. Buckle not included – strap only.
Universal Wrist Fit – Standard length fits most wrist sizes from 5.5'' to 8.3'' (140mm–210mm) . Suitable for both men and women. The soft, premium materials conform comfortably to your wrist shape.
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.
