Rating: 4 out of 5 stars

Nalgene sells this bladder at their website for $19.99. I wasn’t charged with shipping when I made my purchase so there might be free shipping but don’t hold me by my words.

From Manufacturer:

• Specially developed “taste free” energy absorbing material for Nalgene reservoirs.
• Encapsul^TM is produced using only “saturated” polymers. There are no active chemical bonding bites available on (or in) the material, material is as clean as glass!
• High strength is created by a process called “Crossed-Modulus”. Crossed-Modulus utilizes blending high modulus “stiff” material with low modulus “elastic” material to create an energy absorbing strength. Super-clean polyethylene encapsulates a flexible core of TPE.
• Soft, quite, Clear, and rugged.
• Contains Nalgene© Aquaguard^TM anti-microbial formula.
• Helps prevent growth of bacteria and mold.
• Stays taste and odor free

On my trail test on the recent trip it rated pretty well. The wide mouth opening is the same size as their wide mouth bottles and can accommodate my msr filter. The twist cap can conveniently detach allowing connection to the filter. It comes with a convenient locking mouth piece and magnet clips. It allows you to clip one part to your backpack and the mouth piece to magnetically stick to the clip.

Only downside I could find was I couldn’t find a plain insulated sleeve from Nalgene that is made for this. They have those hydration backpacks but I just needed something to prevent it from puncture and stick it into my backpack. Also I added a carabiner to one of the top holes to hold the tube in place while I filter water otherwise the mouth dangles on to the ground sticking dirt and whatever is on the ground to your mouth piece.

$19.99 via nalgene-outdoor.com

the bladder comes in other sizes and varieties also via nalgene-outdoor.com

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