Bladder Insulators are Compatible with Hydrapak Water Bladder Reservoir

These only fit the unfilled size of the hydration bladder, as other reviewers noted. I bought a black 3L size and it fits all of my 2L hydration bladders that have a center tube attachment. They fit my 3L ones, as well. I just don't fill them all of the way - usually about 2.5L because I use ice packs as well.I use hydration bladders for paddleboarding and attach them to my front bungee system. It fits perfectly when full, along with 2 slim freezer packs, and keeps everything cold for hours on the lake. Only thing I had to change was that there weren't any clips on top to hold the actual fluid bladder in place, but I easily attached two small clips inside and it solved that problem. If you don't have clips, just sew a couple of ribbons to tie them at the top.It's also important to note that, due to the cutout, it is not waterproof. This should be obvious, but if that's an issue to you, you should be aware of it.

Bought this for my 1.5 L water bladder… doesn’t fit at all, way too small.

It works great for what it is. The 2 ltr water bladder does not fit in the 2 liter sleeve

Received the wrong size sleeve and seller immediately shipped the correct size. Thank you! The sleeve arrive as described and looks to be high quality. Fits perfect! Excited for some longer lasting coldish water on my next long run.

These are very handy, fit most every size and style of water bladder out there and come in a variety of colors. These help keep the contents cool and water condensation sweat 💦 from getting on you or your gear. Also adds a small amount of padding that can help reduce possible punctures to your water bladder. They also make sleeves for your drinking tubes as well, which helps prevent the sun from warming up the tube in between sips.

Bladder hydration cover keeps liquids cool (recently did a few long runs in hot climate and worked nice). Cut out opening fit the fluid tube connector and tubing. Buying another for other hydration pack!

Only complaint was delivery. They use USPS and it took 10 days. I don't know why. Use fedex or ups. So much faster and more reliable.

The quality is top notch, stitching was excellent and keeps my hydration bladder nice and cold for several hours. Dont hesitate to get one!