Looking for something WARM? The Double Layer-Thermal Trunk will keep you just that way. Constructed from the same chassis as the DL Trunk, Polartec® Classic 100 Fleece replaces the mesh inside. All your favorite features of the DL mask are retained. Water Repellant? Check. UPF 50+? Yessir. Anti-Microbial and Moisture Wicking? Definitely.