Trainer Cup to Open Cup: A Stress-Free Transition Guide
By Mepal | Clever products for every moment in your life. | Mepal | Published: 2026-10-13
Category: Návody
Move from a trainer cup to an open cup without daily battles. Follow these steps to teach sipping, set a realistic timeline, and know when to stop using a sippy cup.
Quick answer
Start offering an open cup at meals around 12–18 months, keep the trainer cup for travel and bedtime, and let your child practice with just a splash of water. Most toddlers need several weeks of short, low-pressure practice before they can drink from an open cup without help. If your child is still using a sippy cup at 2 years old, that is not a failure—just begin replacing one drink at a time with an open cup.
Why the trainer cup is a bridge, not a destination
Trainer cups teach the mechanics of sipping without the mess, but they do not build the same mouth and jaw control as an open cup. That is why many pediatric dentists and feeding specialists suggest moving away from a sippy cup once your child can sit steadily and hold a cup with both hands. The goal is not to ban the trainer cup overnight. It is to make the open cup the normal way to drink at the table while the trainer cup stays in the bag for outings.
Set up the table so spills are not a crisis
Before you start, choose a small open cup that holds no more than 60–120 ml. A tiny cup is easier to tilt correctly and less intimidating when it tips over. Put a towel or splash mat under the chair, dress your child in clothes you do not mind getting wet, and fill the cup only one-third full. If you are using a trainer cup with a hard spout, remove the valve if it has one so your child gets used to a free-flowing liquid before you switch to an open rim.
How to teach the sip without a power struggle
Model the motion yourself: hold your own cup with two hands, bring it to your mouth, and take a small sip. Then hand your child their cup and guide their hands to the sides, not the rim. Say “two hands, small sip” and let them try. If they bite the rim or dump the water, stay neutral, refill, and try again later. Practice for two to three minutes at the end of a meal when your child is already sitting and calm. Never force a sip or hold the cup to their mouth—that turns a skill into a battle.
Choose the right cup for practice and for travel
For open-cup practice, a small stainless steel or sturdy plastic cup with a weighted base works well. For the trainer cup you keep for outings, look for a leakproof, easy-to-clean option so you are not trading one mess for another. If your child is used to a straw cup, you can also practice open-cup drinking with a straw cup at snack time and an open cup at dinner, so the two skills develop side by side.
Your step-by-step transition plan
- Week 1: Offer an open cup at one meal: Put a small open cup with 2–3 cm of water at lunch or dinner. Let your child hold it with both hands while you sit nearby. Do not expect them to drink much. Checkpoint: your child can hold the cup without throwing it for 10 seconds.
- Week 2: Practice the tilt and sip: Guide the cup to their mouth and tilt it just enough for a sip. Praise any attempt, even if water runs down their chin. Keep the trainer cup for all other drinks. Checkpoint: your child gets at least one sip into their mouth without coughing.
- Week 3: Replace one trainer cup drink: Swap the afternoon snack trainer cup for an open cup. If your child refuses, offer water in the open cup and keep the trainer cup for milk or juice so the change feels gradual. Checkpoint: one daily drink now comes from an open cup.
- Week 4: Use the open cup at two meals: Add breakfast or lunch to the open-cup routine. Keep the trainer cup for travel, bedtime, and any time you are in a hurry. Do not remove it completely until your child is consistently drinking from the open cup without help. Checkpoint: your child can drink from an open cup with only occasional spills.
- Week 5 and beyond: Phase out the sippy cup: When your child drinks from an open cup at most meals, stop offering the sippy cup at the table. Keep a leakproof trainer cup in your bag for outings, but use an open cup at home. If your child is under 18 months and still struggling, pause and try again in a few weeks. Checkpoint: the open cup is now the default at home, and the trainer cup is a travel tool.
Products that support the transition
- Basic bento lunch bowl Mepal Vita - Nordic sage: The Mepal Vita basic bento lunch bowl has a tray and one removable, leakproof bento container, and the bowl is microwave-safe with the lid placed loosely on top. You can pack a small open-cup drink and a warm lunch in one container for days when you practice drinking away from home.
- Ellipse insulated tea mug 500 ml – Vivid blue: The Ellipse insulated tea mug 500 ml is leakproof, vacuum insulated, made from 90% recycled stainless steel, dishwasher safe, keeps drinks hot for 4–6 hours or cold for 12, and includes a built-in tea filter. This is a parent’s cup, not a toddler cup, but it lets you model open-cup drinking with a hot drink while your child practices with water.
