Use this as a starting point
Temperature bands are editorial guidance, not a personal temperature rating or a safe exposure limit. Review the full dive plan and local conditions.
Explore an exposure-suit starting point for your planned dive, then use a published size chart to compare a specific model.
Editorial starting point
Full-length coverage adds protection without much bulk. A close, comfortable fit helps limit water flushing through the suit.
Temperature bands are editorial guidance, not a personal temperature rating or a safe exposure limit. Review the full dive plan and local conditions.
Warmth and fit are different questions. Continue to a model chart and follow the manufacturer’s own instructions before buying or diving.
The selection logic cites PADI, BARE, Waterproof and Fourth Element guidance.