Metal water bottles through security in Italy?

I went to St. Peter's a number of times and did not notice anyone carrying a "metal" water container. Most people had the typical plastic.

I scanned this http://stpetersbasilica.info/touristinfo.htm but did not see any specific info unless I missed it. Maybe email for accuracy? Your bag, coat, accessories will be put in a bin on the belt to be scanned by the guards. Very large bags/backpacks, "walking stick" style umbrellas will need to be checked.

Or consider buying a reusable clear plastic bottle, esp. if you're wanting one you can clip to your bag. There are loads of them available.

a metal water bottle is likely to be more environmentally sound than single use plastic bottles, even if those bottles are refilled.

Given the push and plans to reduce single use plastics, maybe a smaller glass refillable even from home if you don't get an answer for the metal. Plenty take metal ones on board planes and one would think the just had to look at it andg give it a shake.

Thanks for your ideas and insights. Sister is very eco-conscious, and tries very hard to limit her use of one-time use plastics - and even many other plastics. (She even makes donations to off-set the greenhouse gases she feels responsible for when taking plane flights.) Sister sets a great example for me! However, I will suggest that she leave the metal bottle in our hotel if we are going somewhere that might be hard-core with their security issues. (The earlier poster that I quoted mentioned that there were some 50 metal bottles in a bin at St. Peters that folks had had to leave there, and poster was able to reclaim her bottle upon leaving the basilica!)

We've hiked for years with the same multi-use, transparent plastic bottles. I think the issue here is for security to be able to see what's in the bottle so I'd leave metal ones at home.

If you can retrieve your bottle, then make it a distinctive one 😉