Listings show a mix of materials: 100% polyester, 100% cotton, a 60% cotton/40% polyester blend, and other cotton/polyester blends.
Most listings recommend machine washing and tumble drying. Several product notes specifically advise 'Tumble Dry Low Heat' in the care instructions.
Some listings offer a 2-piece toddler set that includes a T-shirt and matching shorts.
Listings reference lightweight and midweight fabrics and also describe some items as suitable for 'year‑round' wear. Note that 'year‑round' is a seasonal/use descriptor rather than a specific fabric weight.
In the described toddler 2-piece sets, the T-shirt is a pullover and the shorts use a pull-on closure.