Mine is the thin leather kind from Hasselblad. It's too thin to be comfortable for long periods and doesn't grip the shoulder well. I took a look at the OP/Tech products and I see Amazon has a cheap one that's wider than the one I have.
I'm using one of the Op/Tech Pro neoprene straps with quick disconnect buckles on a Bronica SQ-A and it's very comfortable. Doesn't slip while on my shoulder and can easily handle the added weight of prism finders, bigger lenses, etc.
Not a Hasselblad user ...
I agree with Jim: For heavy medium format cameras I prefer the Op / Tech Pro neoprene series straps. I use them on a Bronica ETRSi and on my Fuji GW670 and 690.
I have and Op/Tech straps for my heavier cameras, including my medium-format Rollei 6008. The only complaint I have is the Rollei strap connection is just a stud and the clip can (and has) come detached after a while. I rarely use the neck strap anyway, usually removing it at the disconnects and carrying the camera in my hand or at-hand in a bag.
I use Tamrac straps. No longer available new. I think it's N-45? These are USA made, including the quick release snaps on the straps. I take the strap off when storing or on a tripod. Every camera I have will take either neoprene, leather or cloth straps.
Actually I use the standard (Mamiya) RZ strap and the Hasselblad web straps on those cameras as the standard quick release snaps work well.
Even with a grip, I put a strap around my neck.
I have the thin Hasselblad strap on the SWC and the medium width Hasselblad strap on the 503 CX. I have stopped using the widest strap because it is uncomfortable. I buy NOS Hasselblad straps which securely connect to the camera body.
Thank you! Neither their photographs nor their text is really clear on that.
Thus the shoulder padding also acts as spring, with the strap sewed to it in kind of loop. Other make(s) use a rubber cord sewn to a crumpled strap.
Just closing the loop. I received the strap over the weekend and did get one photo walk in since then, a walk of several miles. The Op/Tech strap is a major improvement over the thin leather Hasselblad strap. It makes the camera easier and more comfortable to carry, and less likely to slip off the shoulder, which is the way I prefer to carry it. I'm happy with the purchase. Thanks!