Which zipper belongs on a baby onesie?

Q: Which zipper belongs on a baby onesie?

A baby onesie takes a size 3 plastic molded zipper with a two-way slider, separating at the foot so the garment can be opened from either end. The size 3 chain is light enough not to weigh down fine cotton or a brushed back fleece, and plastic teeth stay soft against bare skin. The tape should be backed with a fabric guard and the slider must have a fabric pull, with a garage at the neck so no hard part touches the chin.

• Size 3 plastic, two-way slider, separating at the foot.
• Fabric-backed tape and a zip garage at the neck.
• Soft pull loop; no metal slider or pendant.

Metal teeth are the usual mistake: they are cold, they can pinch, and the slider is heavy on a small garment. The second pitfall is a one-way zip, which forces the parent to undress the baby completely for a change. Check that the two sliders meet cleanly in the middle and that the bottom stop cannot be pulled apart by a kicking infant.