Cosy up in the Nike Ace Jumper. Crafted from a premium merino wool blend, it’s designed to keep you warm and comfortable when the chill sets in. Thoughtful details, like the stretchy mesh down the spine, let you move freely on and off the course. Soft Feel Premium merino-wool blend is super-soft, warm and stretchy. Made to Move Mesh along the spine helps you stay cool and stretches as you swing and bend. Raglan sleeves eliminate shoulder seams for a smooth, natural feel throughout your swing.