I’m considering purchasing Speedo’s switchblade or short fins. There are two sizes available: 9–10 and 11–12. I wear a size 10.5 US. For fins, should I size up or down?
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My support is for the arena powerfins. For a while, I owned Speedo shoes, and I had to wear socks with them to avoid blisters. It was like they were swimming in bricks. Merely my two cents.
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