I had a lovely black yoga bag for about 7 years but it was falling apart. The trim at the top was unraveling. It was time for a new bag. I did consider buying one but in the end I chose to try and make one myself. I used the old bag as a reference, and even used the old cord for the new bag. The bag is simply two pieces a rectangle which is joined on the long side to create a tube and folded under at the top to create a channel for the cord and a circle for the base.