The LULULEMON Define Track Jacket in Luon Black Plum color, size 4, is a stylish activewear jacket perfect for women engaged in activities like gym training, yoga, or running. Made of blended fabric with a polyester outer shell and nylon lining, this jacket features thumbholes, a full zip closure, and pockets for convenience. The jacket is lightweight, stretchy, and machine washable, making it suitable for all seasons. Its sleek design and solid color make it a versatile and fashionable addition to any woman's wardrobe.