'm not very happy with the jackets I bought earlier (43-1-1 for 180 RMB). The problem that the material starts wearing out very quickly, it gets small unsightly knots (something like this). Do you make children's jackets from a different material, ideally canvas? I saw item Mar-44 on your price list which is described as canvas - can you send me a close up picture? Also your 'new material' picture please (42-1).