Masks use a hook-and-loop (Velcro) closure to help them stay secure and adjustable. Toddler masks are described as lightweight, flexible, and specially softened for comfort.
The costume tops are made from polyester (listed as 100% polyester in product descriptions).
Tops are pull-on style for quick dressing, and masks feature closures that keep them secure—making the costume simple to slip on and off.
Toddler versions are sized and softened for comfort: pull-on tops for easy dressing and lightweight, flexible half masks that are specially softened for toddler wearability.
Bottoms are explicitly not included; some toddler listings also specify that socks and shoes are not included.