comments:
partyparrott11 posted on r/baduk5d
This is technically a camera bag, but i find it works pretty well for transporting go bowls. Mine fit in there sideways, so I also use rubber bands to keep them closed. Not the most elegant option, but its a big step up from the cardboard box I used to carry around. https://www.walmart.com/ip/2319072546 Also, I realize this is a US link to Walmart - not entirely sure if they ship to Europe or not. But im guessing you may be able to find similar bags locally too, so this is more of an example