According to layering principles, which layer should be worn closest to the skin?

• A. Shell
• B. Insulation layer
• C. Outer layer
• D. Base layer

Answer: (D)

Wearing a base layer closest to the skin is all about moisture management. This layer is designed to pull sweat away from your skin so you stay dry, which helps you stay warm and comfortable even as you’re active. It’s typically made from wicking materials like synthetic fabrics or wool. Cotton should be avoided here because it soaks up moisture and can make you chillier as it dries slowly.

The insulation layer comes next, trapping warmth to keep you cozy, while the outer shell goes on last to shield you from wind, rain, and spray. So, the layer right against the skin is the base layer because that placement maximizes moisture transport and comfort during paddling.