Boston Celtics Concepts Sport Men's Homestretch Plaid Flannel Pajama Pants. Show your Celtics pride when you lounge around in these lightweight 60% Cotton/40% Polyester Flannel pajama bottoms. These pants feature side pockets as well as a drawstring waist. The pajama bottoms sport the Boston logo embroidered on left pant leg and has an awesome all over printed plaid design. These Celtics pants are extra soft and comfortable so you can show your support even when you sleep! Go Celtics!! Officially licensed Boston Celtics fan gear.