Sizes vary across listings, typically ranging from about 0.39 inches up to 2.4 inches in overall dimensions.
Listings describe foil cat balls as suitable for all ages; several specifically note they work well for both kittens and adult cats.
Product listings commonly describe them as made from foil/mylar or crinkly metallic foil, often combined with lightweight materials such as plastic, polyester, wicker, twine, or fabric.
Common pack counts shown in listings include 4‑pack, 12‑pack, 20‑pack, and 50‑pack.
They produce a crinkling sound from the foil and are described as lightweight and easy for cats to bat or roll.
Product details say they encourage chasing, batting, and pouncing, and that they work well for solo play or interactive play (fetch/occupy-type activities).
Listings describe bright metallic or shiny mylar finishes, assorted color mixes, and colorful accents designed to attract cats' attention.
Yes — product descriptions emphasize the foil/mylar crinkling noise and note that the resulting sound and sensations help keep cats engaged during play.