I hadn't heard of Graf watch bands but one of my vintage chronographs came on a Graf Derby. Both the quality and the feel immediately blew me away. These are without a doubt the most comfortable watch straps I've tried.
This dark brown strap looks great on dress watches and chronographs with light dials. White or silver are perfect combinations.
Available with a steel-colored or gold-colored buckle.
Dimensions: Short side: 75 mm (without the buckle) | Long side: 115 mm | Thickness is about 2.8 mm | Weight is 7 grams.