Integral Designs - Innovative Gear for Self Propelled Adventurers

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"On an expedition to the North Pole in 1986, Will Steiger's team used synthetic-filled sleeping bags (and didn't use VB liners). By the end of the trip, the bags had gained about 35 lbs (16 kg), roughly a pound each night, in accumulated ice". Clyde Soles ( Rock & Ice 2000)

The HVBL is designed to keep a down sleeping bag dry on multi-day trips by preventing body perspiration (up to half a cup a night) from getting trapped in the down. The HVBL will enhance a sleeping system in a number of ways:
1. It reduces dehydration by lowering an individual�s perspiration rate once skin senses that it is in a humid environment.
2. It adds warmth to a sleeping bag by trapping an extra air layer and reducing evaporated heat loss (up to 5�C).
3. It serves as an emergency bivy when out on an extended day trip or climb.

In dry conditions the heat generated by the body will drive moisture through the down. However, in extremely cold or humid conditions, some of this moisture may become trapped in the down and freeze. By using a HVBL the moisture is contained and can be removed by turning the HVBL inside out and shaking off the flakes as the moisture freezes. The HVBL is made from ultra-light Silcoat nylon, has a contoured hood with a draw-string and cordlock to fully contain moisture and reduce liner slippage and has a large foot box ensuring a non-constricting fit.

Length	90" (225cm)
Chest girth:	66" (165 cm)
Hip girth:	60" (150cm)
Foot girth:	42" (105cm)

Weight:	6.5 oz (180g)

Packed size:	3" x 7" (7cm x 14cm)	integrated mesh stuff sack

Colours:	Grey

Unit price: $85.00 USD

Dealers stocking this product:

MEC Buy Hooded Vapor Barrier Liner @ mec.ca
Vancouver British Columbia
Canada
888-847-0770

Backcountry Gear Buy Hooded Vapor Barrier Liner @ backcountrygear.com
Eugene Oregon
United States
800-953-5499

Base Gear Buy Hooded Vapor Barrier Liner @ basegear.com
Portland Oregon
United States
503-292-8988

Moontrail Buy Hooded Vapor Barrier Liner @ moontrail.com
San Antonio Texas
United States
210-602-9881

Product Review:

"To combat in-bag condensation, some use waterproof, vapor-barrier (VB) liners. Though these can make the space around you clammy, wearing long underwear mitigates this" Rock & Ice.