SPIbelt Running Water Bottle, H2O Hydration Companion, 8oz BPA-Free Sports Water Bottle – No Bounce, Leak-Proof Design, Clips to Running Belts or Shorts, Lightweight Fitness Water Bottle

I like this water bottle, it has just enough water to refuel midway through a hike without adding the weight of a normal and heavier water bottle.I did notice, as some others mentioned, that the bottle cap sometimes seems to leak. I found out through about 12 hikes that this occurs sometimes when the cap is not "evenly" screwed onto the grooves of the bottle itself.By way of explanation I have sent three pictures to illustrate the cap screw issue and a potential consideration for a clamp design change in later versions.The 1st picture shows the white bottle by itself and the neck threads of the bottle. You can see where there are 3 distinct grooves for the cap to engage.The 2nd picture shows the white bottle with the installed collar/clamp assembly fitted over the bottle neck opening. Not that the collar covers up the last of the three threads at the base of the neck of the bottle. It also could be that this loss of the last thread contributes to some of those times when leakage occurs.My sense is that the bigger issue is that folks are in a hurry to fill the bottle and they just start screwing the cap on even though it is not lined up properly, and if they stop screwing when they meet the resistance of the collar thinking the cap is secured then perhaps some water will come out when the bottle is turned upside down.One last observation for future clamp design considerations.The 3rd picture shows the collar/clap and cap installed with a normal 1 and 5/16ths inch leather belt which I use to hold both the water bottle and other assorted gear on hikes You can see clearly the pressure "fairings" on the clamp between the inside of the clamp and the belt. Note that the belt is wider than the SPIBelt (which I think is 1 inch in width). My belt is a pretty standard belt width and if the fairings were designed to be located about another 5/16th of an inch lower on the clamp it would much more securely hold the water bottle,...and make the bottle much more compatible with the overall water bottle user community, I think. I have experienced the bottle becoming partially or fully dislodged from the belt when I am entering or exiting a vehicle. Not a big deal to a user but something to watch for when using.

Perfect for my 1-hour hike, just the right size.- not too big, so it doesn't weigh down my belt/pants. The belt clip is secure and easy to get on/off.- seems just about perfect amount of hydration. I usually get home with a little water left.first time I used it it leaked, but seems I had not aligned the clip and the lid didn't screw down all the way. Now I am a little more careful to align and screw down the lid and all is well.

I liked that it had a really nice, snug fit and never fell off the entire 21K race route. But it DOES have a leak problem but I resolved it by NOT filling it to the brim. That's it. Would I recommend it? Yes, I still would.

Works great. I wasn’t sure about ordering when I read reviews saying that it leaked, but I haven’t had any issues at all. Filled easily and stayed put on my SPI belt for multiple 6+ mile runs.

I really like this concept because I’m training in the summer and I soak my clothes in sweat. I wanted to incorporate hydration without having to wash a belt three times a week. This works great and is easy to use while running.

Constantly leaks even when tightly closed

We purchased this for my husbands daily 10k's. Here in Texas it's so hot and heavy a water pack is kit convenient. He fills this with ice and water and it's extra amount as the ice melts. Keep him hydrated and fresh. Clips in his belt so well and it's a runners belt to store key and phone. Thanks so much.

It bounces, but it does hold water. Kind of useless though because I can't bring it out with me because the belt would fall down. That's with just a phone in the original belt and this, so the belt is barely loaded.