Looney Tunes by b.box - sippy cup

In short, yes!

Our new sippy cup is suitable for warm and cool liquids. However, if you have our older style sippy cup we recommend cool liquids only.

They were not designed to serve warm liquids as the valve did not allow the warm air pressure to release – causing liquids to escape through the straw.

Not ideal, we know! We listened and innovated to bring you the new sippy cup!

We do not recommend you serve formula from your sippy cup for two reasons.

Firstly, the straw has a no-spill valve and the formula may be too thick to pass through easily.

Secondly, formula can cause a build-up in the straw which may be difficult to clean thoroughly.

As always we recommend washing all parts of the cup/straws following each use using warm soapy water and the cleaning brush and/or on the top rack of the dishwasher.

Formula is fine to use with the teat, spout and the training cups in our transition value pack.

No. Carbonated drinks may cause pressure to build up and spray from top of the straw. It is also not recommended by dentists to give young children juice or carbonated drinks.

Yes, you can warm liquid in the base of the sippy cup. Please do not microwave straw or attach lid to the base. Always test liquid temperature before serving. As a guide, to warm milk – allow approx. 20 seconds per 180mls in the microwave.

The most common reason why the sippy cup can leak is the straw is damaged and needs replacing or the o-ring inside the lid is missing or dislodged.

Step 1. Determine where the leak is coming from

Step 2. If the leak is between the cup and lid, check the silicone seal in the groove under the lid is securely in place. On occasion, with use and washing, the o-ring may slip out of place. You can watch our instructional video on how to insert the o-ring. If the oring is damaged or missing, we sell replacement orings in a handy twin pack.

Step 3. If your sippy cup is leaking from the top of the straw, it is likely the valve has been worn out - totally normal with babies and toddlers. The good news is, we have replacement straws available and they are easy to change over.

Step 4. Make sure the entire triangular top of the straw passes through the lid so your straw is in the correct position.

Top tip: Make sure you are extra careful when cleaning the straw top as the valve can tear. We recommend using our straw cleaner or cleaning brush set to gently and thoroughly clean your straws.

We recommend straws be washed following each use with warm to hot (not boiling), soapy water using our straw cleaner to clean inside the straw and valve.

Simply insert the cleaning brush from the bottom of the straw and gently pull down. Repeat from the top. You can remove the weight or leave attach, whichever is easiest for you. Then rinse clean or place in the top rack of your dishwasher. You can gently pinch the straw to expel any excess liquid and always allow your straw and other parts to dry completely before reassembly and storage.

The sippy cup straw is steriliser safe. If using microwave steriliser, remove weight.

Yes, you can.

If using a microwave steriliser, remove weight. Please be aware that UV sterilisation can sometimes cause discolouration to your sippy cup. This will not impact performance.

Always check the manual on your steriliser unit for specific instructions on use and maximum temperatures.

The longevity of our silicone straws will vary between kids; how old they are, how they drink, how often they drink, are they teething, do they chew their straw and so on. How gently the straws are cleaned can also have an impact. We recommend checking the straw before each use. At first signs of any damage or wear and tear replace the straw. You can buy replacement straws here, ensuring your sippy cup continues deliver for happy kids, happy pockets and a happy planet.

Step 1. Open the flip lid or remove it

Step 2. Place your finger through the pull tab and gently pull in a downward motion to release

Step 3. To re-insert, hold the straw at an angle with 2 fingers on the wider side of the straw top. Push the wider side of the straw through the opening in the lid

Step 4. Pull the tip of the straw until it pops up through the lid. Make sure the entire triangular top of the straw passes through the lid so your straw is in the correct position

Step 5. Reattach flip lid

The sippy cup has a unique bite release drinking action that requires baby to press down on the straw firmly to release liquid. Key is for baby to place their lips over the whole straw (not just the tip) and press down on the straw, to open the valve and enable liquid to flow.

All littlies are different – some adjust to the straw straight away and others need a bit more time. Encourage them to explore and they will get there!

If you try this yourself and are having issues, then you may have a faulty straw, so please contact us for further assistance.

It’s easy to tell the difference! our new cups have a matte finish lid, a sturdier silicone straw with a finger pull tab and a redesigned weight. Our older style cups have a shiny lid and a thinner silicone straw. see pics below for more guidance…

To remove the straw, simply pull the base of the straw to the side with your thumb, and then pull down to release.

To reinsert the straw, place the end through the opening in lid and pull firmly until the top ring is above the above the opening and the straw is securely in place.

Watch here

Yes, you can. Please just be aware that UV sterilisation can sometimes cause discolouration to your sippy cup.

It shouldn’t!

So it’s likely that the flip lid is on the wrong way.

The clips on either side of the flip lid are of slightly varying sizes, as are the corresponding holes on each side of the cup.

This means that sometimes they can be squeezed into the wrong holes (and end up being back-to-front) although it won’t feel quite right! try flipping your lid around and your problem should be solved.

Uh-oh it shouldn’t! Sorry for the inconvenience. You will need to check that your weight is securely in place.

This means the straw needs to be pushed down as far as possible onto the weight.

If you remove the weight to clean your sippy cup, it is best to wait until the straw and weight are completely dry before re-attaching the weight, to ensure it doesn’t slip away.

If you’re sippy cup o’ring doesn’t have a pull tab, simply run the back of a spoon (or similar) around the edge of the o-ring so that it lifts up to remove for cleaning.

When washed and completely dry, you can place the o’ring back in place and secure by running your finger around the ring.

You can steam sterilise most parts of your sippy cup, however as they are produced from different materials they can withstand different temperatures.

Please see below, and always check the manual on your steriliser unit for specific instructions on use and maximum temperatures:

-PP cup base and lid – up to 100°C

- Silicone straw piece – up to 180°C

- Weighted ball – up to 100 °C