These tools typically combine an ergonomic shape with a click‑reset (push‑down) lever: you press down to dispense icing and the mechanism resets automatically, which helps reduce hand and wrist fatigue.
Decorating kits commonly use a mix of materials: plastic and silicone for bags and some tools, stainless steel for many tips, and polypropylene for certain components. Some plastics are noted as BPA‑free.
Kits often include a variety of tip shapes and counts—assorted tips, numbered tip sets, Russian‑style tips—and standard or large couplers so users can create flowers, borders and other effects.
There are play‑oriented decorating kits and party boxes aimed at children. Examples include a sand‑based soft‑serve play set for ages 5 and up and party kits listed with suggested ages up to about 10 years.
Common inclusions are piping bags and a variety of tips/nozzles. Larger sets may also include pans, a turntable, a carrier, spatulas, molds or toppers, and storage or dispenser boxes for organizing tools.