The Adidas Women's Alphaskin Long Sleeve is a top-rated base layer top for women's running on Amazon. It is made with Adidas' Alphaskin fabric, which provides a supportive and locked-in feel. The top features Climacool technology that helps regulate your body temperature and keeps you cool and dry during your runs. It has a compression fit and a crew neck design for a snug and comfortable fit. The flatlock seams reduce chafing and irritation, allowing you to focus on your performance. Whether you're training for a race or going for a leisurely jog, this base layer top is a reliable choice for women's running.