Thanks for the suggestion. I'll slot in one or two condom but could not find any non-lubricated around. I might as well go for the flavor type [strawberry, mint, etc]. I already have a water purification liquid but too bulky to put in the PSK. <br><br>I use the tongkat ali [herbal root] to keep me warm at night eventhough it is suppose to be a natural replacement for viagra.<br><br>I add in spanner in the PSK because I will be operating in a hybrid Urban-Marine-Jungle environtment. It compliment my Leatherman Supertool. I anticipate that I may need to do emergency repair to an outboard engine or electrical motor.