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Dunno who needs to hear this, but the D3 Kinesiology tape from the supermarket is by far the best chest binding tape I've used. It's stretchy but it binds super well for me(I have a smaller chest size).
It also has paper backing so if you need to round the corners it's really easy! Plus it's affordable for me ($10 for 6m unlike some other companies).
It comes in lots of colours too so win!!!!!
I'm not sponsored this is legitimately the best tape I've used, and I've been searching for a WHILE.