How to clean and sterilise Nuby RapidCool on travel days??

We wash ours the same as bottles, hot soapy water. We sterilise with the nuby rapid sterilise device once it's dry, we have in the past used Milton's as well (same as we use with bottles for sterilising).

When out and about making bottles, I do the hot shot method, so only water instead of the made formula goes in rapid cool, that way I have a rapid cool which doesn't need to be washed and sterilised if I am out all day and needing to make multiple bottles.

So say you're make a 6oz bottle. You'd pour out 6oz of boiled water as normal into the empty bottle. Then rather than add formula at this point, I tip out 5oz of the water into the rapid cool and start cooling it. With the remaining 1oz boiled in the bottle, I then add the formula to it and mix so bacteria is killed. Then when rapid cool has cooled the water, I add that back into the bottle and mix again before giving to baby. I always test the bottle, but never had any problems, I found it worked fine once baby was drinking more than 4oz, any less than this then the bottle wouldn't be cool enough. But because you've only used the rapid cool for boiled water you then don't need to sterilise everytime so great when out and about. We wash the rapid cool every 1-2 days just to keep clean in general.