What aspect of my exposure suit may be inadequate when planning a dive to 30 metres/100 feet?

When planning a dive to 30 meters (100 feet), thermal protection is paramount due to the increase in pressure and the corresponding decrease in temperature as you descend. Water temperature can significantly drop at this depth, and if your exposure suit does not provide adequate thermal insulation, you risk hypothermia and decreased physical performance.

Inadequate thermal protection can compromise your body's ability to maintain a safe core temperature, which is crucial for dive safety. Exposure suits are designed with varying levels of insulation, and for deeper dives, especially in cooler environments, a suit that offers sufficient thermal protection will help ensure you remain comfortable and safe during the dive. This makes it vital to assess the insulation value of your suit in relation to the expected conditions at the planned depth.

The other factors, such as weight distribution, sizing, and overall fit, while important for comfort and mobility, do not directly impact thermal protection in the same way. Ensuring your exposure suit is well-suited for the thermal conditions of the dive depth is essential for safe and effective diving practices.