NECK WARMER WITH STYLE AND FUNCTION. The Therma Tube is our midweight neck warmer that boasts technical performance, comfort, and protection from the elements. It features a 4-way stretch to maximize helmet compatibility and multiple wearing applications. From gliding up the skin track to tailgating beers in the parking lot, our THERMA fabric has what it takes to keep you comfortable. One size fits most adults. THERMA fabric technology is a Midweight, sub-zero annihilator with a brushed Soft-Touch next-to-skin feel. Breathable, 4-Way Stretch, Dri-Flo (moisture-wicking), Quick-Dry, Thermal-Regulation, Abrasion-Resistant, Helmet Friendly, Odor-Free, Lens-Safe, SpectraUV (UPF 50+), Finish Seams. Machine washer/dryer friendly.