Di-Modell Jumbo Soft Calfskin Leather Watch Strap #300028The Di-Modell Jumbo features a smooth, soft calfskin leather that is thicker at the lugs and tappers down to where you buckle it to your wrist. This enables the Jumbo to be used with a deployant clasp. The strap imparts the look of a thick sport strap yet is capable of use with a deployant. This strap looks especially good on aviator and pilot watches such as Laco, Vollmer and Aristo. It is a very impressive strap on the wrist. Di-Modell description: JUMBO AIR-TER-MER. This very affordable strap uses very high quality leather with contrast stitching on the strap and also on the keepers. The strap is water resistant to 100 meters.