This review relates to Hispar 600 Down Sleeping Bag
"This bag has an unmatched warmth/weight ratio ... The draft tubes undoubtedly provide the best insulation behind the zip of all the bags tested – not a trivial detail if you face harsh conditions."
— from Carnets d'Aventures Magazine's test of 18 sleeping bags for cold conditions.
This review relates to the Expedition Double Suit
"On the summit, I was ample warm with just the inner suit and came down MUCH MORE comfortable than anyone else. Overheating was a major factor for my teammates - so much so that one almost didn't get down due to a combination of fatigue and heat-exhaustion. I was chipper on the other hand.
The beauty of the inner suit system was its softness and flexibility which allowed me to move a lot more freely than in a more conventional, bulkier suit."
— Rob Casserley using the PHD Expedition Double Suit on Cho Oyu (8,188m)
This review relates to Xero Down Socks
"The Xero booties were great for sleeping in and I could also wear them inside my Sportivas for mooching around camp. All in all, perfect."
— Nick Lewis, Antarctic Logistics & Expeditions.