SKU: 87124370159

Men's Xenair Alpine Flex Jacket

Sale price$148.50 Regular price$165.00
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Description

Men's Xenair Alpine Flex JacketEliminate the need to stop and change layers as you close in on the summit, with this highly breathable and adaptable synthetic insulated jacket. It combines PrimaLoft Gold Active+ insulation, which breathes and insulates through peaks and troughs of activity, with low bulk Thermic stretch fleece side panels that offer superb mobility and make the jacket easy to layer. The breathable yet wind resistant Pertex Quantum Air fabric deflects windchill

Eliminate the need to stop and change layers as you close in on the summit, with this highly breathable and adaptable synthetic insulated jacket. It combines PrimaLoft® Gold Active+ insulation, which breathes and insulates through peaks and troughs of activity, with low-bulk Thermic™ stretch fleece side panels that offer superb mobility and make the jacket easy to layer. The breathable yet wind-resistant Pertex® Quantum Air fabric deflects windchill while responding to your output, keeping you comfortable on tough ascents in mixed conditions. The result is lightweight, packable active insulation you can wear as a warm layer or technical outer, from the dawn start to the summit push.

  • PrimaLoft® Gold Active+ insulation balances warmth and breathability, ideal for changeable conditions
  • Lightweight YKK® VISLON® center front zip with chin guard
  • Fine-tuned breathability with wind-resistant Pertex® Quantum Air fabric and low-bulk Thermic™ stretch fleece side panels
  • Lightweight single sided rear hem adjustment with anti-snag tether
  • Under-helmet hood helps seal in the warmth on windswept rockfaces
  • Unhindered reach and mobility with the pre-curved, articulated sleeves
  • Two zipped hand pockets, one of which doubles as an integrated storage pocket which you can stuff the jacket into and clip to your harness on the climb
  • Fit: Slim
  • Weight: 354 g / 12.5 oz (Size M)
  • Centre back length (Size M): 72.5 cm / 28.5 in
  • Insulation: 40gsm PrimaLoft® Gold Active+ insulation (55% recycled content) throughout
  • Main fabric: 20D Pertex® Quantum Air with fluorocarbon-free DWR (47gsm [2cfm])
  • Secondary fabric: Thermic™ stretch fleece (215gsm) side panels
  • Fabric lining: 20D recycled nylon (40gsm [10cfm])

 

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SKU: 87124370159

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Gita Anjali
Lowell, US
★★★★★ 5
great for beginners
Format: Paperback
simple to understand, good examples
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Reviewed in the United States on May 3, 2026
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Atiyah Ellerbee
Los Angeles, US
★★★★★ 5
Great book!
Format: Paperback
Great book! I really like how the instructions are explained in the book and how it encourages you to both use the terminal / python interpreter and make files in vscode. This book can be used for intermediate python programmers and brand new programs. for the intermediate people, its a good refresher of the basics, and by the end you will definitely KNOW, KNOW them. I got this book in prep for new grad job applications, code assessments, game jams, and general practice. So I think you would do good to get this book at any level if you really want to get the basics down and know them!
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Reviewed in the United States on January 2, 2026
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Pete
Alexandria, US
★★★★★ 5
One of the best Python books
Format: Paperback
I bought 5 Python books as I needed to learn the language quickly for an upcoming project. Of all the books that I purchased, I found this one to be the best. It starts out with the basics and works its way through more complicated areas. Each chapter builds well upon the other. There is very little redundancy, and I was able to get through the book in about a week. I have a background in software development, so this book was able to show me how Python implements different concepts that I already knew, but I think a beginner would also be comfortable with the material.
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Reviewed in the United States on March 22, 2026
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LinckG
Boise, US
★★★★★ 4
Easy to follow
Format: Paperback
Good book and easy to follow. Progression is well paced
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Reviewed in the United States on January 6, 2026
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J.
Battle Creek, US
★★★★★ 5
Honestly, I never thought I would enjoy studying this much!
Format: Paperback, Format: Paperback
I was so grateful for this book's excellence that I opened the Amazon website during my break to write a review. I wanted to brush up on my skills before taking my first Python class in the fall, so I was looking for a beginner's book I could study on my own over the summer. Since I had no coding experience, I needed a book that explained even the smallest details step-by-step. I've been studying with the goal of completing two chapters a week since August. I'm currently on Chapter 8, and it's been so much fun! Honestly, I never thought I would enjoy studying this much. I spent two days on practice problem 8-8 (though I spent most of the time lying on the couch screaming, "Why can't I do this?" than actually solving the problem). However, after some time, I reconsidered and re-tested the problem, and today, on the third day, I finally figured out what the issue was! I resisted the urge to ask AI or look at the GitHub code the author had posted. Instead, I solely relied on the book to solve the problem. The information in the book was more than enough. I'm proud of myself! If you're a beginner like me and just starting out with Python, I highly recommend this book! It seems unlikely I'll be able to finish all the remaining chapters and projects before the fall semester, but I'd like to take the time over the weekend to finish this book if possible. I have no doubt that the detailed, helpful explanations and systematic practice problems will help me solidify my fundamental Python coding skills.
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Reviewed in the United States on August 29, 2025

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