Thyrm CLENS Protector For Modlite, Surefire, Streamlight and Other Lights


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(82 customer reviews)


Lights only work well when their lenses are clean.  CLENS provides an easy way to protect lenses during extended shooting sessions.  Just like goggle tear-offs for off-road riding, just remove the dirty CLENS to return your light to its optimal brightness

CLENS (pronounced “cleanse”) is a set of heat-resistant clear polymer circles that are cut to fit on a wide range of flashlight and weapon-light lenses. CLENS protects the lens from carbon and other debris that can build up from the use of lights during firearms training. CLENS can be removed to quickly clean a light, rather than having to apply Vaseline before shooting, replace a lens, or risk abrasion with lens cleaners.

Below is a CLENS size chart, showing the four models of CLENS sheets and the corresponding count and sizes of CLENS on each sheet.


CLENS’ mild adhesive backing has a higher affinity for polymer than glass. This makes it easy to attach and position, without leaving adhesive on clean glass. However, adhesive may stick to a dirty or damaged lens; in this case, touching the sticky side of CLENS to any residual adhesive should remove it from the lens.

CLENS was made in collaboration with Aaron Cowan of Sage Dynamics / Sage Instruments.

* Follow all firearm safety rules at all times. Detach lights from firearms prior to installing, removing, cleaning, or replacing the CLENS.

Designed and manufactured in the USA.

Additional information

Weight .2 oz
Dimensions .5 × 5 × .5 in

CLENS-18L (Fury, HL-X etc), CLENS-18M (Modlite. TLR, HL etc), CLENS-18S (X300U, Scout etc), CLENS-31 (mix)

82 reviews for Thyrm CLENS Protector For Modlite, Surefire, Streamlight and Other Lights

  1. PatrioticAlpaca (verified owner)

    Like sands through the hourglass, this is the CLENS of our lights. Seriously though, who would have thought that such a simple fix to one of the most annoying problems with shooting with WMLs could do such an awesome job? carbon buildup on a WML lens robs you of the hard earned Lumens and Candela you paid for; why let carbon cheat you out of being able to scorch retinas 300 yards away? Okay, yeah, you could save some cash and use petroleum jelly on your WML lens, but not only is that messy and a PITA to clean up, it’s also… well… do you REALLY want to use up your jelly stash meant for your illicit nighttime excisions with a certain crusty sock? I think not! Just pony up the dinero and save yourself potential embarrassment: the CLENS are as good as gold!

  2. SJ (verified owner)

    Easy way to battle carbon

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