Polyester

**Stay Warm and Comfortable:** The women's thermal underwear set is designed with a soft fleece lining that effectively blocks cold air while retaining body heat. With expert stitching techniques that minimize heat loss, this set is ideal for chilly conditions, accommodating activities such as yoga, skiing, running, hiking, horseback riding, or simply walking a dog. **Distinctive Half-Zipper Design:** The garment features a versatile half-zipper that can be adjusted according to personal preference. This design not only prevents cold air from entering but also highlights neat, uniform, and tightly contrasting decorative lines, thereby enhancing the aesthetic appeal of the activewear.