YONEX HEATCAPSULE Size: M Worn for about a year. Pilling on the lower left back in one spot. A faint green mark on the lower right back in one spot. Both are inconspicuous and you probably won't notice them unless you look closely. Please check the photos. The hem of the top can be tightened. There is one pocket on each side. Made of two layers of fabric to block the wind, so it's warm.