Foster's Beer Cap This was given to me about 25 years ago. I don't think I ever wore it outside, but it was so long ago that I might have forgotten. I don't think there's any noticeable dirt on the brim. What's unusual is that the brim is probably made of pigskin, which gives it a slightly luxurious feel. Foster's Beer is an Australian beer, and the cans are mainly blue. Collectors and Foster's Beer merchandise fans, how about it? Color...Blue系 (Blue-based)