Looks like flannel - and keeps you warm like fleece. With this button-up, appearances are only one-half of the story. While the plaid pattern pairs perfectly with plenty of graphic tees, the polar fleece construction feels light but keeps your body heat close - essential for those chilly days you and your crew are still kicking it around downtown O'Neill Men's Fleece button-up. Standard Fit: Relaxed through the body and sleeves. Double chest pockets. Allover plaid print. Snap buttons. 100% Polyester polar fleece. Imported.