Most sets use polyester fleece knit — many listings list 100% polyester for both the tops and the pants. One set is described as flannel fleece.
Two-piece sets include a pajama top (t-shirt or long-sleeve) and pajama pants. Three-piece sets add a coordinating vest or a matching sweatshirt to the top and pants.
The pants are pull-on style with an elastic waistband, providing a comfortable, adjustable fit.
Most listings recommend machine wash and tumble dry. One listing provides more detail: wash in cold water on a gentle cycle, avoid washing with rough fabrics, and do not use an iron.
The sets are made from knit fleece fabric and are described as single-layer construction.
Some listings are sold as two-set packs that include two matching top-and-bottom sets. Other listings offer three-piece packs — typically a sweatshirt, sweatpant, and vest — and are described in product copy as offering 'triple the value.'
