Most rainbow rattles and teethers use wood, silicone, plastic, and fabric. Example listings include wood-and-plastic combinations, silicone teethers, and polyester fabric toys.
Recommended ages vary widely across listings. Examples include newborn/0 years, 0–18 months, 3 months and up, 6 months and up, 6–18 months, and 6–24 months — so check each product’s recommended age on its listing.
Activity spirals are designed to wrap around handles or rails so they can attach to car seats, strollers, and cribs for on‑the‑go or travel use.
Wooden rattles and teethers are often made from beech wood sourced from sustainable forestry and finished with water‑based, non‑toxic stains or protective finishes.
Sizes vary from compact to larger flat shapes. Example listings show compact items around 3.75 inches in diameter and other pieces up to about 6.5 inches across; specific product dimensions in listings include values such as 0.98 × 6.5 × 6.26 in, 4.6 × 1.1 × 1.1 in, and 5.5 × 4 × 0.25 in.