Adventure Sports Online
Tips on choosing everything from thermal underwear to biking gear.
http://www.adventuresports.com/

aHealthyMe!
Advice on how to choose the right hiking shoes or boots.
http://www.ahealthyme.com/topic/hikingboots

Great Outdoors
Offers product reviews of travel gear.
http://www.greatoutdoors.com/gearsearch/gearreviews.html

LL Bean
Travel gear buying guide and tips.
http://www.llbean.com/outdoorsOnline/index.html?&feat=gn

National Geographic
A guide for adventurers and explorers on choosing the right gear. Look under the heading "Adventure and Expeditions" for full details.
http://www.nationalgeographic.com/siteindex/index.html#adventure

Outdoor Clothing & Footwear Recommendations
One outdoors enthusiast's list of the best gear to buy.
http://www.verber.com/mark/outdoors/gear/clothing.html

Planet Fear.com
A very detailed boot buyers guide.
http://www.planetfear.com/reviews/buyersguide/boots.html

Practical Travel Gear
Weblog dedicated to reviewing travel clothes and travel gadgets.
http://practicaltravelgear.blogspot.com/

Ramblers.org
Tips on choosing the right clothing, boots and rucksack.
http://www.ramblers.org.uk/info/factsheets/equipmentsafety.html

Snow & Rock
Features gear reviews, gear maintenance guides, buying guides, FAQs and an ask the expert section.
http://www.snowandrock.com/advice/

The Backpacker.com
Backpacking gear reviews listed by manufacturer.
http://www.thebackpacker.com/

TNT Magazine.com
Features a detailed and freely downloadable guide to buying the right travel gear.
http://www.activemag.co.uk/tntguides/
http://www.tntmagazine.com/travelzone/