Strap for Atum Polo Rose Gold

The lug width of the Moritz Grossmann Atum MG-001158 is precisely 20mm. This measurement refers to the internal distance between the case lugs, measured perpendicularly to the case surface. It is critical to verify this dimension with a digital calliper before ordering any aftermarket strap, as an incompatible lug width would not seat properly in the case lugs.

The optimal strap depends on intended use and aesthetic preferences. For formal elegance, an alligator strap with vegetable tanning creates visual coherence with the rose gold case and develops a rich patina over time. Shell cordovan offers a more robust, vintage-oriented alternative. NATO straps in heavy ballistic weave provide daily versatility, whilst high-density rubber straps guarantee maximum functional durability.

Changing the strap on the MG-001158 requires a spring bar tool: insert the flat tip gently into the small aperture beneath the lug, compressing the internal spring slightly. When the spring disengages, extract the pin completely and remove the old strap. Position the new strap by aligning the holes to the case lugs, then reinsert the pin until it clicks into place. We recommend having this operation performed by a qualified atelier such as Casati Milano to prevent damage to the case lugs.

Any strap with a 20mm lug width is mechanically compatible with the MG-001158. However, to preserve the visual harmony of the timepiece, we recommend straps crafted from noble materials—alligator, shell cordovan, superior-grade calf—or NATO straps in heavy ballistic weave. Milano Straps curates a selection of 20mm straps individually verified for both constructive compatibility and aesthetic resonance with this specific model.

Leather strap durability varies according to construction quality, tanning method, and conditions of use. A strap crafted from premium leather (alligator, shell cordovan, vegetable-tanned calf) can last between 5 and 10 years with regular maintenance. Exposure to moisture, perspiration, and heat accelerates deterioration. To extend functional life, we recommend rotating straps periodically, storing them in dry environments, and gently cleaning them with a slightly damp cloth every 2–3 months.