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Charmking Compression Socks ($20)

I let Amazon's bestsellers decide which compression socks to buy, and I'm so glad I did. These have thousands of five-star ratings and hold the number one spot among Amazon's options, so I added them to my cart before my trip and wore a pair on the flight to Cabo — then another on the way back. Since long travel hours can make pregnancy swelling worse, compression socks are a must for keeping circulation in check. I love that they come in a bulk pack because I've been wearing them nonstop since and haven't had any swelling whatsoever.