sleepingbag liner

Tag Archives: sleepingbag liner

February 3, 2012 · 10:53 pm

Rescue Bivysack/VBL

Used by Search and Rescue Skiers as a compact and quick tool to get a wet person out of the wind and wet. Wind and waterproof coated nylon sack stops evaporative and convective heat loss for the whole body in a super tough and compact 7 ounce package. The orange colors make a good signaling device and wind sock. Dimensions 85″ length, 71″ shoulder girth, 48″ inch foot girth. Can be compacted to fist size. Also works well as a roomy vapor barrier liner inside a sleeping bag to prevent condensation in the insulation. Silicone coated 30d type 66 nylon in either blaze orange or black. Group discounts available. Call 888-292-4534 for more info.

Vapor Barrier Liners, More

Just before Goretex burst on the scene, VBL’s
were more popular as they greatly enhanced the
usefulness of coated fabric rain gear etc. The most
popular undergarment of the time was the large
opening cotton string shirt. This worked really well
as it kept the VBL far from the skin but didn’t
have a lot of fabric for absorbtion. Even better
were the expensive wool versions.

One combination I have used with success is a half
bag of silnylon for the legs and waist when sleeping
combined with a VBL jacket. This way your feet
stay warmer than using VBL pants as heat from your legs can more easily reach them. It also can
double as a pack liner.
The jacket can be worn during the day and with the advantage of enabling you to layer coats over the top of the VBL for both sleeping and hiking.
I have found that a VBL jacket over long johns was comfortable with no noticable moisture buildup when hiking in sub zero weather
and balancing my outer layers
to keep from overheating.

Climbers on Denali wear
VBL vests under down gear when climbing to keep
their insulation layers dry next to their backs.