When getting to high altitude, climbers have to face low oxygen level and harsh weather. Combined with fatigue and the toughness of a strenuous terrain, having the right gear is essential. Insulation, lightweight and compressiblility are the required properties to always be safe in the heights.
Down filling garment and gear are the choice made by adventurers and mountain climbers when they takle big mountains. Actually, down is the fluffy layer that most birds have underneath the feathers. Down provides warmth and comfort while feathers provide an efficient outer against wet conditions and cold temperatures. It has tremendous insulation properties as down traps the heat of the body in its clusters - or barbules. When it lofts, the heat is trapped and provides the suitable insulation while wicking the excess body moisture to keep you dry. That's why down gear (especially jacket and sleeping bags) are prefered to synthetic fibers for its unbeattable performance on insualtion, longevity, compressibility and weight. It is an amazing natural fiber you can rely on in any outdoor activity.
Goose and duck down are used by outfitters to fill their technical garments. Grey Goose down is considered to have the highes
t performance, the highest loft and an exceptionnal longevity. The quality of the down is rated in cubic inches also called CUIN. The higher it gets, the better is the quality of your down. The range varies from 400 to 800 cubic inches - or fluffing capacity - and should be combined with the proportion - or % - of down / feathers to rate the insulation. The label of your garment, jacket or sleeping bag should mention a rate of, for exemple, 95 / 5 which means, 95% down and 5% feather - that is the highest performance possible. If you have no specification of that rate, it may indicate that the CUIN is under 400 cubic inches and that your garment contains low proportion of down. Duck down is also very commonly prefered as it is far cheaper but the quality does not meet the requirements of goose down. The number of compartments that trap the down in the construction of your garment is also an essential information ; they are here to maintain the down in place keeping on insulating along your body. Finally the outer should be lightweight, have an impermable to down liner, resilient and wick efficiently the moisture ... surely, choosing a sleeping bag or a down jacket for your next big mountain trip will give you a taste of the altitude sickness headache !To keep your garment for a lifetime, take good care of it. Store it in a dark and dry place out of its compression bag to allow the down to fully loft. Wash on delicate program - wahsing machine is OK - with no other garment and temble dry on mild temperature with 2/3 tennis ball to help restoring the loft - refer your label for more details. Always use the LOFT DOWN WASH non-detergent NIKWAX product to maintain loft and performance to always enjoy your passion of climbing in altitude in fluffy warm gear.







