The NDLSS Thermal LS Base Layer - Black is a long-sleeve cycling base layer designed for use in cooler weather conditions. Its primary function is to provide thermal insulation and moisture management when worn under cycling jerseys or jackets. This product is suitable for road, gravel, or mountain biking during autumn, winter, or early spring rides. Constructed from thermal fabric for insulation Long-sleeve design for extended coverage Black colorway for versatile layering Designed to be worn as a first layer under cycling apparel Flatlock seams to minimize chafing Moisture-wicking properties to help regulate body temperature Lightweight and form-fitting for optimal comfort Suitable for use in cold to mild weather conditions This base layer is typically machine washable and intended for repeated use throughout the cycling season. Proper care can help maintain its thermal and moisture-wicking performance. Available Variants: X-SMALL: 16461898 SMALL: 16494666 MEDIUM: 16527434 LARGE: 16560202 X-LARGE: 16592970