Men's Insulated mid-season jackets: intermediate layers
When the temperature drops, an extra layer will be required. This is when the insulated jacket will provide comfort and warmth.
Mid-layers are available with synthetic or down insulation.
Jackets with synthetic insulation have the advantage of wicking sweat away from the fabric and drying quickly. Intense or aerobic activities will be well suited with synthetic insulation.
Down has the advantage of being warmer, lighter, and more compressible than synthetic insulation. The #1 enemy of down is moisture.
Down-insulated jackets are best suited for medium to low-intensity activities.