I've used this about three times with carbonated water, but I haven't had many opportunities to use it with carbonation, so I'd like to pass it on to someone who will. Please take a look at the back in the photo; that part is slightly dented, and it wobbles a bit when standing. However, it's still usable. Please purchase this item if you understand this. ^_^ In a blog, some people use it for golf with beer, so how about it for those who want to keep carbonation and carry it around? This screw-type bottle is compatible with carbonated drinks. When you turn the lid slightly, the pressure releases with a "psst" sound, making it easy to open. Size (approx.): Width 7.5 x Depth 7.5 x Height 28cm, Body weight (approx.): 300g, Capacity: 750ml, Sports drinks OK Cold insulation: Below 10°C (6 hours)