I’ve standardised on these great camera neck and wrist straps by a company called “Cordweaver” – https://www.cordweaver.co.uk/ . The straps are very light and strong and are available in a choice of two colours, red and black and various lengths, the leather ends are hand-sewn with strong polyester waxed thread. Connection to the camera is via the fitted 16mm diameter split rings and the wrist straps are made out of Type III 550lb Paracord with 7 internal strands.
Great service, very quick dispatch and very high quality merchandise. I used one on my EM-1 and one on my TG-5 for my recent trip to Porto and it was great, so good I’ve since bought another three, 🙂 very comfortable to wear and strong and it would be very hard to cut through should someone try and grab the camera.
Additional: The wrist straps come in two types, with Peak Design style connectors (as fitted to my EPL-5 on the top left) and, without, (as fitted to my TG-5). It is also supplied with a spare Peak Design connector, a nice touch.
Lastly, I really like how flexible they are and tuck in nicely in my camera bags unlike some of the stiffer and more bulky neck straps I’ve used. The wrist straps act like slip knots at either end so they tighten at both the camera end and the wrist end should the camera slip from your grip, the addition of a rubber grommet is another nice feature.