This watch strap is designed based on the Seiko waffle strap from the seventies. The original strap was for 19mm lugs, a size that is hardly used anymore.
This strap is for 22mm lugs and it has a steel keeper.

The strap wears extremely comfortable, not only because of the material (silicone, hard), but also because of the design of the inner side which makes it more flexible. The holes I placed also keep your wrist dry. The lug-holes are made for the fat Seiko push pins. Because of the free metal tubes that are added to the strap (to be inserted in the lug-holes) it is also possible to wear this strap with standard push pins. The steel keeper is half the height of the rubber keeper that the standard SKX007 strap has, so it does not press much into your wrist, it will also not break but that is a no brainer.

The short end is 7,7 cm, the long end is 12,5 cm. The thickness is 2,6 mm.