Look for breathable and moisture wicking to reduce heat loss without overheating.
Moisture Wicking Layer
It’s important to stay dry because moisture against the skin contributes to an increased rate of heat loss. According to the CDC, hypothermia can occur at mild temperatures (above 40 degrees F) “if a person becomes chilled from rain, sweat, or submersion in cold water.”
Light, Loose Layers
Well-fitting garments that are not skin tight provide better insulation due to air gaps, which help keep you warm without overheating. Light layers provide the ability to adjust to changing temperatures through the day by removing layers, versus one heavy and bulky garment.
Sweatshirts or fleece jackets work to keep warm air in and can be easily removed as conditions change. Zip fronts are more practical because they can be unzipped to release hot air as you work up a sweat.