Is This Toy OK for Their Age?
The 3+ on most toy boxes is a choking warning: the toy has small parts, and US rules keep small parts out of toys for children under 3. Tick what a toy has and the child's age, measure a piece if you like, and the checker says which rules apply, what they mean at home, and what to watch.
Check a toy
Say how old the child is and what the toy has. Each answer comes from the US federal toy rules, with the rule named.
Federal rules set the floor a toy sold in the US must meet; they do not make any one toy safe for any one child. Not medical or legal advice.
What does 3+ on a toy box mean?
Usually that the toy has, or could shed, small parts. Federal rules ban small parts in toys intended for children under 3 (16 CFR part 1501), and a toy for children from 3 to 5 that has them must carry this warning (16 CFR 1500.19):
"WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs."
So a 3+ is not a verdict that the toy will hurt a two-year-old. It means the maker built it for children past the age when everything goes in the mouth, and the rules stop it being sold for younger ones. Whether it is right for your two-year-old depends on the child and on whether an adult is beside them; our article on whether magnetic tiles are safe for 2 year olds works through one common case.
How the choking test works
A small part is anything that fits entirely inside the CPSC's small parts test cylinder, without being squeezed, in any orientation. The cylinder is 1.25 inches (31.7 mm) across, with a depth of 1 inch (25.4 mm) on one side and 2.25 inches (57.1 mm) on the other, its bottom slanting between them. It is sized to a young child's throat. Toys for children under 3 are also dropped, pulled, twisted and bitten in use-and-abuse tests (16 CFR 1500.51 to 1500.53), and a piece that breaks off counts too.
The checker's measurement is the cylinder's geometry. A piece whose two smaller sizes fit the opening (their diagonal, or the diameter of a round piece) and which is no longer than 1 inch fits: it is a small part. A piece whose middle size is wider than 1.25 inches cannot pass the opening however it is turned, and one longer than about 2.57 inches (65.3 mm, the longest straight line inside the cylinder) cannot sit inside it: neither is a small part. Everything in between could fit tilted or standing in the deep side, so the checker treats it as a small part. A plastic small-parts tester costs a few dollars and settles it.
Balls, marbles and balloons
| What | Under 3 | Older children | Rule |
|---|---|---|---|
| Small ball: 1.75 in (44.4 mm) across or less | Banned in toys for them | Ages 3 to 7: "WARNING: CHOKING HAZARD - This toy is a small ball. Not for children under 3 yrs." | 16 CFR 1500.18(a)(17), 1500.19 |
| Marbles | Banned in toys for them | "WARNING: CHOKING HAZARD - This toy is a marble. Not for children under 3 yrs." | 16 CFR 1500.19 |
| Balloons | Under 8: "WARNING: CHOKING HAZARD - Children under 8 yrs. can choke or suffocate on uninflated or broken balloons. Adult supervision required. Keep uninflated balloons from children. Discard broken balloons at once." | 16 CFR 1500.19 | |
Magnets
The danger is two or more strong magnets swallowed: they pull toward each other through the walls of the intestine. The CPSC estimates 26,600 magnet ingestions were treated in hospital emergency rooms from 2010 through 2021. Toys must meet ASTM F963-23, the mandatory federal toy standard (16 CFR 1250.2), which keeps strong magnets small enough to fit the test cylinder out of toys for children under 14, loose or after testing. Separately, since October 2022 any loose magnet that fits the cylinder in a product sold for amusement, jewelry or stress relief, such as a desk set of magnet balls, must have a flux index under 50 kG²mm² (16 CFR 1262); the Tenth Circuit turned down a challenge to that rule in 2025.
Magnetic tiles hold their magnets inside large plastic pieces, so the question for a tile is whether it is whole. The Magna-Tiles FAQ rates its sets 3 and up and asks for active adult supervision for children who mouth toys. The products the CPSC pulled in 2026 were different: magnetic cubes that broke open, stick figures with magnets in the limbs and ball-and-rod sets. Our magnetic tiles for toddlers, tested and ranked covers which sets suit the youngest builders.
Button and coin batteries
Under Reese's Law (16 CFR 1263), enforced since March 2024, a product with a button or coin battery must have a compartment that needs a tool, or two separate hand movements at once, to open, and must carry a warning. Remotes, light-up toys, musical cards and kitchen scales all use them. Check the cover is screwed down and keep spares locked away.
Water beads
Since 12 March 2026 water bead toys for children under 14 must meet a federal rule (16 CFR 1250.4): beads small enough to swallow may only grow so far in water, acrylamide is limited, and the toy and package must warn: "Children have DIED when the beads blocked their intestines." Dry beads are small enough to fit the test cylinder, so they have no place in a toy for a child under 3 (CPSC guidance).
If something is swallowed
The CPSC's advice for magnets and for button batteries is the same: get medical help at once, even if the child seems fine. Several magnets can look like one object on an X-ray. For a battery, the CPSC lists the National Battery Ingestion Hotline, 800-498-8666, and Poison Help, 800-222-1222. Call 911 if the child is struggling to breathe.
Before you buy
- Search the brand and product with "recall" on cpsc.gov/Recalls, especially from a marketplace seller.
- Buy from a listing sold by the maker or the store itself: most of the 2026 magnet and small-parts recalls were cheap toys from small overseas sellers.
- For a house with a toddler and an older child, buy for the toddler's rules, or keep the older child's set where little hands can't reach.
For games a two- or three-year-old can play safely, see our cooperative board games for preschoolers, or the board game finder.
Sources: 16 CFR 1500.19 (warnings), 1500.18 (bans), 16 CFR 1501 (small parts), 16 CFR 1250 (ASTM F963-23), 16 CFR 1262 (magnets), Reese's Law (16 CFR 1263), the water bead rule (16 CFR 1250.4) and the CPSC's pages as linked; Magna-Tiles' FAQ. Checked 19 October 2026. Federal rules set the floor a toy sold in the US must meet; this page is not medical or legal advice.