Since I found this picture I couldn't resist to make one for myself. I bought some denim fabric but it took many days to take action. The making process wasn't very hard.
(this blue one is not mine!!) As soon as I saw this blue ribbon on Etsy shop. I knew I have to make one for myself! But I only had this picture and didn't know how to Knit this thick string. ^^:
Then I found that this sting called ' I-cord' from below website (one of my favorite blogger) a few days later