25 watts is not a massive heat generating appliance. My laptop runs at 85 watts. Hair dryers run at 1600 watts or more. Office Quarters: From $36.90 - Tatco International Dual Converter/Adapter TCO 15500 TCO15500 is essentially what I took with me to France, but I was using precisely two electronic devices; my 85 watt laptop (which is dual voltage and I only needed the proper shaped plug), and my cell phone, which is a couple of watts.

However, I would be very surprised if the above would be unsufficient if your straightener is only 30 watts. It seems to be rated for 50 watts, after all.

Plus, it has the advantage of having just about any plug shape for anywhere in Europe, and possibly south america as well. There are a couple of switches on the side to ensure you are going between the proper voltages.

You can get it at Walmart next to the suitcases.