A pullover or sweater is essential for staying warm during cooler mornings and evenings on the Camino. Choose a garment made from lightweight, insulating materials like fleece or merino wool that provide warmth without adding bulk. Look for a design that is breathable and moisture-wicking to keep you comfortable during varying activity levels. A pullover with a half-zip or full-zip option can offer added ventilation and easy layering. Ensure it is packable and fits easily into your backpack without taking up too much space.