Wonderfull value vs their cost, I have found these ostrich-grain to be very comfortable and a great match especially for dress watches that will combine well with this style of straps.
They come in 4 sizes (12-14-18-20mm), 4 colours (black, blue, burgundy and cognac) and have colour-matching stitching. Their length is approximately 90mm on the buckle end (including the silver-coloured fitted buckle; a second, gold-coloured buckle is included with each strap) and 115mm on the tail end; so not short but not too long either. Please note that silver and gold refers to the buckle colour and not the material. They have two keepers, one of them is fixed and the other one is floating, for a better fit and comfort.
A good quality pair of spring bars is included with each strap. Feel free to contact me for whatever questions you might have.