excellent all day
forgive for the wrong translation
I used translate.google.
I will participate in your discussion if it is possible.
at us almost all guys refused such valves about three years ago.
http://bestprotection.de/shop/out/pi...5-thickbox.jpg
almost all use the such
well joins one hand
http://i2.guns.ru/forums/icons/forum...63/5363361.jpg
there are still necessary adapters for filling with water. thanks to what Camelbak shouldn't take out each time from a cover.
http://bestprotection.de/shop/out/pi...-kit-web-2.jpg
and new interesting sample. it is used by climbers, water rods and rescuers - when both hands are occupied. the modern material - silicone is used and it isn't necessary any cover absolutely. doesn't proceed - it is checked.
the only problem - it not the military (looks the stranger on military regimentals)
I use such when I play in a protective mask.
he easily under it will go mad, it isn't necessary to unmask, and don't stir levers.
http://alpindustria.ru/i/product/m/139421_3.jpg
I hope my information it was interesting. (also it is clear))))