For a cozy and warm neon base layer top, look no further than the Columbia Women's Glacial IV Half Zip Fleece. This top is made with Columbia's soft and lightweight fleece fabric, which provides excellent insulation and breathability. The half zip design allows for easy ventilation, while the neon color adds a fun and vibrant touch. Whether you're hiking, skiing, or simply running errands, this top is a versatile and stylish choice.