A TOP THAT'S SOFT AND BREATHABLE, INSIDE AND OUT. Layer up in the Nike Pacer Men's Top. This long-sleeved, 1/2-zip mock-neck surrounds you in bulk-free warmth when you're running in cooler weather. Soft fabric feels cosy: made with brushed fabric, the top features small nodes inside the garment. Arranged in a grid pattern that's soft to the touch, they provide breathable, lightweight warmth. layer or wear solo: a standard fit in sweat-wicking fabric follows your shape while allowing enough space for layering comfortably. Shoulder seams roll forward, letting you move freely. Custom coverage and airflow: the 1/2-zip design with mock-neck collar lets you adjust exposure to the elements to your liking.