This black nylon webbing pull through watch strap is excellent quality and is available in either 18mm or 20mm widths

Neat, heat sealed holes and edges with secure heat welded joints ensure a quality product, available in black 18mm watch cases
 This standard length strap which will fit a wrist  between 20 and 25 cms in circumference  is suitable for for watches with removable or fixed bars
It is secured by simply threading under the bars and behind the watch case