It is important to order a harness that has an appropriate girth measurement for your dog. If your dog's measurement falls between two different sizes, consider ordering the larger size to allow room for growth.
The usable total fineness range is, for example, 20 to 10000 dtex, and preferably 300 to 3000 dtex. The single-yarn fineness range is, for example, 0/02 dtex to 10000 dtex, and preferably 0/1 dtex to 3000 dtex. When the total fineness is less than the above range, this leads to poor productivity. When the total fineness is more than the above range, this may lead to a lack of cooling power in melt spinning, resulting in poor yarn-making properties, for example. From a practical point of view, a fiber used for the net has a strength of 1/5 cN/dtex or more, more preferably 2/5 cN/dtex or more, and still more preferably 3/0 cN/dtex. Meanwhile, there is no particular upper limit on strength, but it is usually 9/0 cN/dtex or less in order to achieve stable production under today's technology. Also, elongation may be suitably selected as necessary, and may be within a range of 10 to 300%, for example. As more preferred ranges, when it is 10 to 100%, a net with high strength and excellent dimensional stability can be obtained, and when it is 100 to 300%, softness can be imparted to the net.