The all new EVEREST SUMMIT is lighter than ever - 6.38 lbs in my size 10.5s! Eagerly awaited and 3 years in the making the EVERST SUMMIT has been completely redesigned, using the latest materials and processes to assure the greatest warmth, fit, comfort and convenience. From the inside out - the hydrophobic polyester inner boot sports a contoured and arched aluminized insole with a wool felt top, AeroTherm aerogel & Primaloft insulation with a radiant reflective aluminized lining. The toe & heel are wrapped in high tenacity grippy Canova fabric for durability and a solid connection to the outer boot. The red synthetic leather Cordura overlays are not just for looks - they help form heel and ankle pockets for a secure "no lift" fit. Additionally two large web loops and Quick Fit lace tighteners make pulling on and securing your liners easy - even with gloves!
Likewise the outer boot is all new - lighter, streamlined and more durable. Ease of entry is assured by large pull on loops and closure is via speed laces and single 1.5" no stretch synthetic leather and Velcro strap. EasyZip gaiter is comprised of 3 fabric combos for specific performance: red SuperFabric backed by shin protecting 4 mm Aveolite foam - aluminized on both sides and resistant to compression; black SuperFabric insulated with Aveolite foam also - all around and all the way to boot top; dark gray Cordura SuperGrip fabric provides the best resistance to crampon damage and the yellow SuperFabric has a "4 More Season" Gore-tex membrane backing - for exhausting sweat and repelling moisture. Last but not least - tall climbing rubber rands (4.5" inside, 6" heel) further protect from crampon wear points, punctures and abrasion.
Under foot - updated Vibram Marmolada lugged outsole is lighter, energy absorbent and has carbon rubber toe insert for traction and wear resistance. It is backed by a micro cellular midsole with plastic crampon inserts and a medium stiff contoured fiberglass and carbon fiber footbed. Recommended for your next expedition!
Isothermal to -60 C (-76 F), 2 year guarantee, made in Italy.

Note:
EVEREST SUMMITS now run much closer to true size (0-1/2 up from your single mountain boots) and are labeled in USM, USL, UK & EU sizing. Fit guaranteed with a faxed order and tracing of your bare foot (including dimensions and size history)! Get your order in as soon as you have firm plans for the next expedition. Limited stock availability. We do a high volume business in this category and the season is always "on" for us.