Most teethers target infants from newborn (0 months) up to about 36 months. Common age labels you’ll see are 0–12 months, 3 months and up, or 0–18 months.
Shapes like curved handles, cross‑bars and lightweight, easy‑grip forms help small hands grasp and bring the teether to the mouth. Some designs are flexible or bendable to reduce injury risk.
Reviewers commonly report that these teethers soothe gums and are well accepted by babies. Many also note they’re easy for infants to grasp, and some reviewers comment positively on durability.