http://www.exotac.com/firesleeve/
https://www.bladehq.com/item--Ka-Bar-Becker-Campanion-Fixed-Blade--10601
Waterproof even when submerged to 3 feet for 30 minutes
Floats
Protects the gas button from being pressed accidentally
Gas lock allows lighter to stay on without holding the gas button
Attachment points on the cap and on the body to keep your lighter from getting lost
Retain cap on bottom of body
Improved grip
Reusable
Patent pending
Made in the USA