Aria 2 PCS Set Plus Size Womens Gorgeous Polar Fleece Pajama Top & Pants Set 6% spandex Very high quality fabric: 94% polar fleece micro-polyester, 6% spandex; Machine washable. 100% Authentic Aria merchandise, satisfaction guaranteed. Great top features long sleeves and V-neck. Fabric covered elastic waistband with drawstrings for added comfort.