Thermalogic Trellis Grommet Top Insulated Curtain Pair. The Thermalogic Trellis Insulated Grommet Panels are 100% cotton and have a thermal insulating backing to guard your rooms against cold drafts in winter and to repel summers heat. -aIn addition, they're energy-efficient and will reduce utility bills year - round. The insulated backing also darkens rooms and acts as a sound barrier from unwanted outside noises. Stylish geometric pattern features a richly hued trellis print against a bright white background, making them the perfect accent to any modern home. Features a grommet top panel and makes hanging a breeze - simply slide the grommets through your favorite decorative curtain rod and you have a bright, modern patterned curtain with strong temperature and noise benefits. Comes as a pair and is machine washable. All curtains are .25" thick. Materials: Face: 100% Polyester Back: 100% Acrylic Foam.