Most Halloween balloon arches and kits use latex for the balloons and plastic or paper for decorative boards and arch components — so expect latex, plastic, and paper materials across options.
Listings describe latex balloons as suitable for inflation with air or with helium for floating displays; one listing notes a maximum blown size of about 25 cm (10 inches).
Inflatable arches are usually easy to inflate (self-inflating or by plugging in) and often include tethers and stakes for outdoor anchoring; they deflate for compact storage when not in use.
Trunk-or-treat kits commonly bundle themed boards or PVC pieces, a set of balloons, paper fans or decorative garlands, and double-sided removable adhesive tape for attaching decorations.
Balloon sizes in the listings are about 10 inches (25 cm), while inflatable arches are shown at full scale — for example, an 8 ft (96‑inch) arch is listed.
These decorations are used on walls and doors, in car trunks and garages, and for indoor or outdoor displays; larger inflatable arches are specifically intended for outdoor setups.
Inflatable arches deflate for compact storage, and trunk-kit boards are noted as reusable and supplied with removable tape for easy cleanup and re-use.
At least one inflatable arch is described as pre-lit, indicating integrated lighting is included on that arch.