i keep my batteries in the fridge, and these keep moisture off them and make good grab-n-go packs. great for letting the batteries warm up without condensation forming. they fit in soft double-stack mag carriers and probably any 5-6" tube sheath. these are VERY thick and practically crushproof - great for cigars, camp cooking supplies (dry chiles), couple shots of booze, etc. clean well, some were greasy. could probably take camo paint if sanded first.