The dry suit must never be worn over regular clothing.

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Multiple Choice

The dry suit must never be worn over regular clothing.

Explanation:
The main idea is how a dry suit is worn and why underlayers matter. A dry suit should be worn over insulating base layers, not on top of everyday clothes. The suit is designed to seal at the neck, wrists, and ankles to keep water out and to trap a layer of warm air inside. If you put regular clothing under the suit, those clothes can bunch up or create bulk that interferes with a proper seal and free movement, making it harder to don the suit correctly and to maintain a watertight fit. Regular clothes—especially cotton—also don’t insulate well when damp and can become heavy and uncomfortable if moisture gets in or you sweat, whereas intended base layers (synthetic or wool) wick moisture and stay warmer when damp. So wearing the dry suit over regular clothing would undermine fit, comfort, and safety, which is why the practice is to wear base layers underneath and not regular clothing.

The main idea is how a dry suit is worn and why underlayers matter. A dry suit should be worn over insulating base layers, not on top of everyday clothes. The suit is designed to seal at the neck, wrists, and ankles to keep water out and to trap a layer of warm air inside. If you put regular clothing under the suit, those clothes can bunch up or create bulk that interferes with a proper seal and free movement, making it harder to don the suit correctly and to maintain a watertight fit. Regular clothes—especially cotton—also don’t insulate well when damp and can become heavy and uncomfortable if moisture gets in or you sweat, whereas intended base layers (synthetic or wool) wick moisture and stay warmer when damp. So wearing the dry suit over regular clothing would undermine fit, comfort, and safety, which is why the practice is to wear base layers underneath and not regular clothing.

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