Exploring M-65 Liner Materials: Wool vs. Polyester

What are your experiences with different M-65 liner materials? Do you prefer the warmth of wool or the convenience of polyester? The M-65 jacket is a versatile piece of outerwear, and its performance is often influenced by the liner material used. Both wool and polyester offer distinct advantages, and the choice ultimately depends on your personal preferences and the conditions you're facing. How do you feel about the balance between warmth and practicality when choosing an M-65 liner? What factors influence your decision?