Cooler Bags - Protective Sleeve

I have both the 3L & the 2L. I've used these to keep water bladders cool on trail runs and steep hikes in the heat in both Solomon Skin 12 tight fitting vests and in a Deuter Futura 26 pack. Both sizes performed perfectly in both packs. They are extremely light and insulate very well, The only complaint is also a benefit - because they are rectangular, they will fit any shape bladder, but that also means it doesn't fit any bladder perfectly so you have extra insulation material to fold over or pack down in some way. Regardless, it is so light and insulates so well that it is worth it. I highly recommend it for these reasons.

This is a well made bag that works well to keep your drink cool for hours. All the seams inside and out are finished with seam tape. It has three layer construction (canvas, foam, foil) as seen in this cutaway photo. Each side is about 3/16” thick. I modified mine with a sewing machine to fit into an Osprey Seral 7 lumbar pack with a 1.5 liter bladder. Mine doesn’t have the Velcro flap to close it up and just relies on the pack’s zipper. After filling up with ice cubes and water and zipping up the pack I checked it hourly to see how it worked. It still had the last bits of ice in it after 6 hours at room temperature, around 72F. The unmodified pack with the flap closure would probably work even better. Well worth it if you like your drinks cold.

Great bag. Not sure on the insulation quality. Carried a cold bag in it and it was warm in two hours

This camel hydration cooler bag works great with all of my 2L and 3L backpacks, yes it keeps my water ice cold for more then four hours here in Southern California. I highly recommend it for everyone.

I haven't had to use it as I planned on. I got this to place my water blaster in my EDC backpack. I wanted something in the event the water bladder broke or leaked, that it would contain the fluid. Since I carry my laptop and or electronics, leak would damage my gear. Even though my backpack does have e a water bladder slot, this just provided me a layer of safety without much bulk nor additional weight. The added benefit is it keeps the water cold which is much needed around here. The inner lining seems good. I haven't had any tears nor have I seen any of the stitching become undone. As of now, I'm keeping my rating where it is. Once I do some hard testing, I will reevaluate my rating.

Great Hydration Water Bladder Pack keep the bladder cool. like slimness comfort fit my pack also good design

My existing hydration bladder was sustaining some damage due to equipment inside my pack that was rubbing against it. Ordered this bladder sleeve and I'm very happy with the product. For the price it is excellent quality. What I like about it: ● Fabric feels like a heavy grade Cordura. It for sure is abrasion resistant. ● Inside lining is similar to some of the soft ice coolers so there is plenty of insulation. ● There is added padding to provide extra protection in addition to more insulation. ● The 3 liter sleeve lets me just fit in my Source WXP 3L bladder - (shown in picture). Overall a great product and I'm buying an additional one for one my other packs. Highly recommend.

I just received this product and haven't had a chance to really test it but based on experience it looks like what I needed. I have been using hydration bladders for years and for years I have used camelback bags. It gets really hot here and I do like cold water so in the past I have made my own sleeves from aluminized bubble wrap. To be sure - that really works and it just takes a little patience to get the right fit. I have one in my 3 liter camelback Mule right now. But I wanted to be able to use a bladder with an older Duluth rucksack and my homemade jobs were not making the cut. I looked at the camelback standalone bag and it looked interesting enough for me to go to a local retailer and check them out. Very nice bags - not a good fit for my pack but I would have liked one as a back-up bladder when I lived in the desert. I also checked out the Deuter sleeve - its really nice and I use Deuter and Osprey backpacks so I was really interested. It was too big - I really needed a slim two liter sleeve. Just got this little guy today. My two liter bladder is a snug but appropriate fit and it is an exact fit for my old Duluth rucksack. I am going to give it a try tomorrow. The center location for the tube exit looks like it will work well but it looks like it will be easy to route the tube out the side if need be. For the cost - this looks like a good value. Our heat index today is 102 with high humidity so tomorrow will be a good initial test for me. As a side note - it is too large to fit in my camelback rogue that I use when biking. The rogue does a good job of insulation so I didn't need it for that application but I tried it anyway.