Children's ring toys are commonly made from silicone, polyester, and various plastics.
Teething-friendly rings typically use soft, chewable silicone, are BPA-free, and include textured or braided surfaces and sizes shaped for small hands to grip and chew.
Sizes vary from very small teether rings (example dimensions like about 1 in H × 4 in W × 5.5 in D) to much larger inflatable play rings (example 36 in × 36 in × 2.5 in), with many medium-sized ring packs in between.
Some baby ring toys list formal standards such as ASTM compliance, and many ring toys carry standard safety warnings like choking-hazard notices for small parts.
Inflatable play ring seats are often sold with no assembly required, feature removable machine-washable covers for easy cleaning, and fold or deflate for compact storage and travel.