Review on OYATON Water Bottle Holder With Adjustable Shoulder Strap, Portable Bottle Carrier Sling Folds Into Pouch For Easy Storage, Perfect For Walking Travel Hiking Plastic Or Stainless Steel Water Bottle by Ron Coleman

I liked it so much that I ordered a second one for my sister. I love the loop at the top that goes around the top of the bottle and makes sure it stays secure. I've had a variety of holders and this is the most secure one I've found. Lots of ways to carry it -- it looks like it has a good belt loop, although I always use the shoulder strap. And, although I always just leave it unfolded, the fact that it zips up into a very small package to storage or travel is very handy.