Openings vary by style. Many masks provide separate eye, nose, and mouth openings for vision and breathing. Molded or decorative face masks often have smaller eye slits that can restrict peripheral vision, while full-head latex or molded designs sometimes include larger mouth openings to make speaking and breathing easier.
Some masks include simple electronic effects such as light-up elements or flip-up features. Those electronic masks in these listings require one AA (1.5V) battery; many other masks and headwear list no battery requirement.
Common fastening methods include hook-and-loop (Velcro) strips, back zippers, elastic waistbands or bands, and metal pins for attaching capes. Padded or foam-backed costume pieces often fasten with hook-and-loop strips or elastic straps for a secure fit.
Some multi-piece costume sets list a mask among the included pieces (for example, apparel sets or jumpsuit-style costumes). Other listings are mask-only and explicitly list a single included piece: “Mask.” Check the product’s included-items section to confirm.
Design features that affect visibility and playability include small eye openings (which can limit vision), the type of strap (elastic or adjustable, which affects fit), and added effects such as flip-up sections or lights that increase play value.