Review on 🏞️ NC 3 Pack 700ML Collapsible Outdoor Sports Kettle – BPA Free, Leakproof, Reusable Water Bottles for Camping, Sports, and Hiking (Black, Blue, White) by Sandra Ford

They were great for theme park use, easy enough to open and close but tight enough that I didn't have to worry about a leak. The carabiner worked fairly well, although I can see it can detach if pushed in the right direction. The size was large, any larger would be too large and a much smaller one would require more frequent refills. The kids never complained about him bumping their feet or anything like that. Very easy to roll up and secure with a carabiner when empty. We froze one on day one because we had an extra one and wanted to see how it would perform. I'm sure it would be great if you want very cold water, but there is a lot of condensation in it compared to filling with water. You'll want to put it in a Ziploc or similar if it comes in a bag with things you don't want to get wet.