I used their sizing chart. The fabric stretches just fine but the elastic waist band is very uncomfortable and does not have much stretch at all. They do not run true to size.
Stay Cozy with DAVID ARCHY Turtleneck Nightwear for a Comfortable Sleep
53 Review
Men'S Slim Fit 1/4 Zip Pullover Sweater - Durable Wash Friendly Soft Fitted
51 Review
SIORO Reindeer Matching Christmas Pajamas for Men - Festive Sleepwear
49 Review
Length Hooded Bathrobe Housecoat Nightgown Men's Clothing in Sleep & Lounge
55 Review
INFLATION Bamboo Shirts Sleeve Elastic Men's Clothing in Shirts
45 Review
Calvin Klein π Herringbone Sleeve Men's Dress Clothing
50 Review
Men'S Long Sleeve Polo Shirt - Slim Fit, Stretchy, Breathable Collar
43 Review
Men'S Regular Fit Short-Sleeve Dress Shirts By Allsense - Look Stylish And Professional!
41 Review