The product is a Grays brand one-piece pajama sack designed for men in a regular size. It is made of dark gray fleece fabric and is one size fits all. Perfect for a cozy night's sleep, this adult sleepwear is ideal for lounging around the house or snuggling up in bed. The Trail Ridge Dark Gray Fleece PJ Pajama Sack combines comfort and style for a relaxing and comfortable sleep experience.