The mid-layer: Your insulation
Next up, focus on the mid-layer, crucial for insulation. Long-sleeved active t-shirts and fleece are your go-to. These pieces keep you warm while allowing sweat to escape. They are generally made from breathable and moisture-wicking materials, prevent overheating, and offer a snug yet flexible fit, allowing you to move freely. Fleece is a versatile and cozy option. It breathes well to prevent overheating, dries quickly, and fits smoothly between your thermal base layer and outer shell.
