I have tried a few ribbed tanks. They always end up stretching out. It’s hard to find one that fits.
I had a few from another brand. Bought at a shop on vacation. I loved…..then they discontinued the tank. They lasted a while but ended up getting tiny holes and fading. So I’ve tried a few times to replace those. They are staples, nothing came close.
Found era. I bought one in the summer of 22 and washed it a few times. Once I could see it kept shape, I became obsessed. Bought doubles of white and black….just in case.
I love my era.