Moisture-wicking Capilene performance polyester is quick drying and easy to care for. Pull-on pants feature a covered, elasticized waistband. Patagonia runs large. Love this set! Good condition, just some pilling from normal wear. On the back of the pants there is a snag and on the front of the pants there is a very tiny little spot that I did not see until I reviewed closely just now - see photos. Does not affect warmth. Tops and bottoms are currently selling for $39 each on the Patagonia website. Smoke-free home and open to bundles.