Small holes in top, what do I do?

I’ve never had an item have any faults that aren’t in the description before so I’m not sure what to do. The top has two small holes near the armpit which I’m sure the seller just didn’t notice but are probably going to get bigger as I wash it. I don’t think its a big enough deal to return it and I feel weird asking for a partial refund as it was $20. But leaving a bad review without messaging the seller first seems disingenuous. What can I do without being an asshole?

I’ve never had an item have any faults that aren’t in the description before so I’m not sure what to do. The top has two small holes near the armpit which I’m sure the seller just didn’t notice but are probably going to get bigger as I wash it. I don’t think its a big enough deal to return it and I feel weird asking for a partial refund as it was $20. But leaving a bad review without messaging the seller first seems disingenuous. What can I do without being an asshole?