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In chilly weather, the X-Bionic Men's Energy Accumulator Short Pants prevent you from burning up as you work out and from getting cold and soggy when you take a break. Insulation on fast-cooling areas such as the hips help you hold onto body heat, and channels in the groin area get air flowing as you move. The Energy Accumulator Short Pants also have sweat traps that pull excess perspiration away from your body to be evaporated, yet they leave a thin film to ensure you stay cool without needing to perspire more. Light pressure from these pants stabilize musclesthis improves your performance by saving your energy. The thigh-high cut provides less coverage for high-output or not-so-frigid days.