Open Cup vs Sippy Cup: Your Baby's First Weaning Cup

Open cup or sippy cup for weaning? Compare sipping vs sucking, jaw development, and mess, plus decision rules to pick your baby's first cup with confidence.

Publishing teamXI LANGS Editorial

PublishedOct 17, 2026

Page updatedOct 17, 2026

Reading time5 minutes

Open Cup vs Sippy Cup: Your Baby's First Weaning Cup

Quick answer

For most babies starting weaning drinks, choose a small open cup first, then add a sippy cup only for travel or messy days. An open cup teaches sipping rather than sucking, which supports jaw development and fine motor skills, while a sippy cup contains spills better but can prolong a sucking habit. If you want one cup to begin with, pick a baby-sized open cup you can hold together.

Why the cup you choose shapes how your baby drinks

The main difference between an open cup and a sippy cup is the action they teach. An open cup encourages a sipping action rather than sucking, which is good for promoting jaw development. A sippy cup with a spout or valve usually rewards sucking, the same reflex babies use at the breast or bottle. That does not make sippy cups bad, but it explains why many parents use an open cup at home and keep a sippy cup for outings. Your baby's first cup is a weaning cup choice, not just a piece of tableware.

What to look for in a first open cup

Size and weight matter more than fancy features. A cup that is too tall or heavy tips before your baby can control it. Look for a small, stable base and a capacity close to a few sips, not a full drink. The Bear Open Cup is 7cm x 7cm and holds 120ml, which is perfectly sized for baby and toddler hands. A free-flow cup like this has no valve, so your baby learns that tilting the cup brings liquid; that immediate cause and effect is the point of baby open cup weaning. Expect some spills in the first weeks and treat them as practice, not failure.

When a sippy cup still earns a place in your bag

A sippy cup is a practical tool for car seats, prams, and days when you cannot supervise a cup closely. The trade-off is that a valve or spout can make drinking feel like sucking again, so use it as a backup rather than the only cup your baby knows. If your baby is already comfortable sipping from an open cup, a sippy cup for travel will not undo that skill. If your baby has only ever used a sippy cup, introduce an open cup alongside it rather than waiting for a perfect moment.

How to start open cup practice without turning mealtime into a soak

Begin with a small amount of water at a time your baby is calm and not overly hungry. Hold the cup with both hands and guide it to your baby's lips, tilting only enough for a sip. Let your baby place both hands on the cup as soon as they show interest. Use a bib and a splash mat, and keep a cloth nearby. Short, frequent practice beats one long session. Once your baby can sip with help, move to a cup with a little water on a low table and stay within arm's reach.

Decision rules for your first weaning cup

If your baby is 6 months or older and can sit with support: Start with a small open cup and offer a few sips of water at meals. Use a cup that holds around 120ml so it is not too heavy when full. Choose open cup first for skill-building.
If you need a cup for prams, car seats, or travel: Add a sippy cup as a second cup, not a replacement. Keep open-cup practice at home so the sipping skill keeps developing. Use sippy for containment, open cup for learning.
If spills are stressing you out: Reduce the amount of water in the open cup to two or three sips and practice on a splash mat. A full cup is harder to control than a nearly empty one. Small portions make open-cup practice manageable.
If your baby refuses the open cup: Try a different time of day, a different colour, or let your baby hold the cup while you guide it. Do not force it; offer again tomorrow. Repeated low-pressure offers beat one big attempt.

Product facts that help you decide

Bear Open Cup: Bear Open Cup: 7cm x 7cm, holds 120ml; free-flow silicone cup that encourages a sipping action rather than sucking. The small size and free-flow design make it a natural first cup for supervised open-cup practice at home.
Baby Bear Bonnet - Pink: Baby Bear Bonnet - Pink: fits 0-2 years; a blank gift card can be included when gift is stated at checkout. A practical add-on if you are putting together a weaning gift set and want a personal note included.