How to Properly Fit and Adjust Your Scuba BCD for Maximum Comfort

By Camila Reyes February 10, 2026

Ever spent an entire dive fighting with gear that won't stay put, straps digging into your shoulders while your tank shifts every time you move? Host Camila Reyes knows that frustration firsthand, and in this episode she breaks down the exact process she now uses to fit and adjust a BCD before every dive trip. Whether you're working with your own gear or testing a rental, you'll learn how to stop the constant underwater readjusting and finally focus on what you came to see.

Key Takeaways

  • BCD sizing varies wildly between brands. A "medium" from one company might fit completely differently than a "medium" from another. Always try on a BCD while wearing your actual wetsuit or drysuit, because a thicker suit can make a perfectly good fit suddenly feel way too tight—like trying to wear your winter coat under a backpack that fit fine with just a t-shirt.
  • Shoulder straps should always be adjusted first. Think of them like the foundation of a house—everything else depends on getting them right. The BCD should feel like it's part of your body, not a heavy backpack sliding around on your shoulders.
  • The chest strap does more than you think. That little strap across your chest keeps your shoulder straps from sliding outward when you raise your arms, kind of like how suspenders keep pants from falling down. Position it about two inches below your collarbone for the best stability.
  • Test your fit while leaning forward. Since you'll be swimming horizontally underwater, standing straight up doesn't tell you how your gear will actually behave. Bend at the waist and check if the BCD stays put or rides up your back.
  • Write down your strap settings once you find them. This saves you from starting over every time you dive. It's like marking your favorite seat position in a car—next time you just dial in your numbers and you're ready to go.

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