Streamlight SL-20XP Cap. If you carry a full size flashlight, like the Streamlight
20 XP LED or the Streamlight 20 XP Poly, the cap alone will not break glass.
This flashlight is made
out of a Polymer case, which as you know, feels like plastic.
There is no way you can
break a window with this flashlight. Attaching Bust A Cap® to your flashlight
will insure that it will break glass with a simple tap, virtually
adding no weight.