I was initially skeptical about this shoulder strap cord, fearing that the inability to adjust the length (fixed at 100 cm) would make it uncomfortable and limiting, and that the material might be stiff. But after testing it in the field, I completely changed my mind. The 150D nylon, with a 10 mm diameter and double-sided stitching, proved not only soft and comfortable on the shoulder and neck, but also extremely durable, as expected from the quality of K&F Concept, a company I already know for the reliability of its products. No signs of fraying or wear, even after intensive use.
Another concern was related to the stainless steel metal ring; it connects easily. I was worried that the ring would damage the camera body, but the leather padding protects the camera body from scratches. Even the fixed length, which I feared might be a limitation, proved perfect for most situations, allowing me to quickly grab the camera to capture the moment.
In short, this lanyard is comfortable, durable, and versatile, perfect for carrying my DSLR everywhere, and definitely preferable to many other "band" straps, which can sometimes be uncomfortable and, over time, become stiff and chafe against the skin on your neck. A product I recommend.