I've only had them a month, but they seem to be quite sturdy. I have 2 young children & take water along everytime we leave the house. It's great to have along at the park, the mall, anywhere! It does a great job of keeping beverages cold & I love the small zippered pocket for stashing my keys or some change. The detachable strap makes it easy to hook an insulated snack bag to it or attach it to a stroller, shopping cart, etc. I bought one in 3 different sizes (1L, 1.5L & 2L) to accommodate all the different size water bottles we use (depending on where we're going & how long we'll be there.) I bought each one in a different color to make them easy to tell apart and so far, I've been really pleased with my purchase! A great buy! 5 stars

I freeze a bottle of water about 3/4 full and then top it off everynight I go to work. I bought a few a these insulated sport sac's with the hopes that they would help keep the water atleast cold all night. These things work way better then I anticipated!! I've left the bottle in the sac all day while I've slept, and when I've gotten up there was still ice in the bottle and the temp outside was in the 80's. They are well worth the money!! 5 stars

You really do get what you pay for here. When the bottle holder arrived, I was not impressed with how cheaply made it was. The insulation material comes in direct contact with the watter bottle inside of the bottle holder. When the bottle sweats, the holder becomes soaked right through to the outside. It cannot stand up to daily use. I used it a couple of months before it began to come apart at the seams. I recommend you look for a better solution. 3 stars

I bought this product in it's 2 liter size. It did seem to keep my drink cool for a little while longer than otherwise, but at the cost of covering up the bottle's handle and making it awkward to handle in that size. I kept it hung on a hook in the cab of the ambulance, so it didn't really get heavy wear, yet it frayed and ripped after only a few months of use. I wouldn't really bother buying another one. 3 stars

This item works as described. Bought two in different colors. It's a good value item. 5 stars