For a young ear, 8mm is the right first hoop — it sits close, it does not catch on a hairbrush, and it does not look like a grown-up's earring on a seven-year-old. 10mm is the natural next size. 12mm is about as large as this page goes.

Scarlett runs across all three sizes in both gold and silver, plain or with a CZ, and it is far and away the most-bought thing here. Sunday Hoop in silver and Ava Infinity Hoop in gold and silver are the same idea with a different profile — Ava's closure snaps together with no visible hinge.

At $36, a small hoop with something on it: Esther Cross, Sadie Bow in silver, Lock and Key, Baseball, Kai Seashell and Aster Star in mother-of-pearl, and a Green Gator. Most of the charms lift off the hoop, which is useful — the same pair suits a nine-year-old and, two years later, still suits her.

ASTM F2923-20 is the American standard for children's jewelry. It limits lead and cadmium content, restricts nickel release, and sets requirements around small parts. All of them are made to it.

All of them carry a documented 316L surgical-grade stainless steel spec and all of them are rated waterproof for shower, pool, ocean and sweat — which for a child is not a luxury feature but the difference between an earring that stays in and one that comes out every swimming lesson and gets lost.

Kids hypoallergenic screw back studs · All huggie hoop earrings · Kids necklaces

Everything else made to the same standard sits in the hypoallergenic collection.

Much less easily than a stud. There is no separate back — the hoop hinges and clicks shut behind the lobe, so there is nothing to work loose and nothing to drop. That is the main reason parents move a child onto huggies.

Any age with healed piercings. The 8mm sizes suit a young ear best; 10mm and 12mm suit older children and teenagers. All of them are made to ASTM F2923-20, the US children's jewelry standard.

They are 316L surgical-grade stainless steel — the same grade used for surgical instruments — rather than plated brass, so there is no nickel release to react to. The ASTM standard these are made to specifically limits nickel release along with lead and cadmium.

All of them carry a waterproof rating for shower, pool, ocean and sweat, and none of them needs to come out at bedtime. For a child that matters more than it does for an adult: an earring taken out for swimming is an earring that gets lost.

For a very new piercing, the screw back studs sit flatter and are the usual starting point. Huggies are the natural step after that — same steel, same standard, and nothing to unscrew.