Adventra Thermal Inner 501 is a warm and comfortable base layer designed for cold weather conditions. Ideal for low-intensity activities with minimal perspiration, it features a brushed lining that provides average warmth and soft comfort. Made from polyamide-based fabric, this thermal inner is non-waterproof, non-UV protective, and comes with a pocket-free design for maximum ease of movement. A reliable choice to keep you warm during winter wear.