SKU: 84586566719

Castelli Nano Flex Pro Race Bibshort Men's

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Description

Castelli Nano Flex Pro Race Bibshort Men'sThe original Omloop knee length thermal short now in full Nano Flex 3G fabric for all conditions from dry to cold to wet. Product features Nano Flex 3G fabric is water repellent, stretchy and warm thanks to the luxuriously soft brushed inside Reduced seams for comfort and to prevent water from coming in during wet rides Knee length cut for extra warmth that doesn't require a gripper elastic Mesh bibs don't add warmth to the upper body so you can dress

The original Omloop knee-length thermal short now in full Nano Flex 3G fabric for all conditions from dry to cold to wet.

Product features

  • Nano Flex 3G fabric is water repellent, stretchy and warm thanks to the luxuriously soft brushed inside
  • Reduced seams for comfort and to prevent water from coming in during wet rides
  • Knee-length cut for extra warmth that doesn't require a gripper elastic
  • Mesh bibs don't add warmth to the upper body so you can dress for the conditions
  • Progetto X2 Air seamless seat pad for long hours in the saddle
  • Weight: 205gm
  • Temperature: 12°C - 20°C / 54°F - 68°F
  • Fit: Race

You could call this a "convergence" product. A few years back we pioneered the first Omloop thermal short, inspired by pro riders cutting off their knee warmers to just the bend of the knee at the Omloop Het Nieuwsblad on a brisk sunny morning. We set about making a bibshort cut right to the bend of the knee and realized that we could make it without a gripper elastic and that the extra 10 centimeters of fabric add a lot of warmth. Those first Omloop shorts were made for cool, dry conditions, like the race that inspired them, using our Thermoflex fabric. Fast-forward to 2020 and the new third generation of our Nano Flex fabric is as soft, stretchy, breathable and warm as our Thermoflex fabric, so now we can make this short ideal for cool and dry conditions, but it's also excellent on wet days. It's still a pro tool: this short is identical to the model supplied to Soudal Quick-Step Team.

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SKU: 84586566719

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4.3 ★★★★★
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J
Verified Purchase
Jason Bolton
Dallas, US
★★★★★ 5
Great book
Format: Paperback
Great book! It is helpful as I work towards my Masters of Science in Applied Artificial Intelligence
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 20, 2025
J
Verified Purchase
James Gianoglio
Phoenix, US
★★★★★ 5
Comprehensive Guide with Practical Insights
Format: Paperback
This is a solid book for understanding the art and science of working with LLMs and other generative AI models. I always struggled with getting the output I was looking for, and wasn't sure how best to "ask" the models for what I wanted. This book did a great job of laying out the strategies and practical guidance to craft the prompts. There were a lot of tips and tricks, but the overall understanding and framework around prompt engineering has been super useful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 25, 2024
M
Verified Purchase
Matt B
Lowell, US
★★★★★ 5
A must read!
Format: Paperback
Hands down, the best book on prompt engineering and implementing LLMs. Really enjoyed Michael and James deep dive. Whether you're technical or not, this book is foundational to a deeper understanding in how to properly explore and implement LLMs.
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Reviewed in the United States on June 25, 2024
S
Verified Purchase
SR
Houston, US
★★★★★ 4
Helpful for GPT/LangChain framework
Format: Paperback
I applaud the authors for putting forth a comprehensive introduction in a rapidly evolving space. I absorbed a lot, helpful as I was developing a prototype — using open source methods. And that’s where I was disappointed. The LLM and examples are highly adapted to OpenAI’s GPT-x and the bulky LangChain framework, something not obvious until you dig in to the book. Sure, this may be where newbie demand was when the authors began writing. But as the open source models and OpenAI alternatives gain speed (e.g. Llama 3.1, Groq, etc.) this book may quickly need an updated and expanded version to stay relevant.
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Reviewed in the United States on August 7, 2024
K
Verified Purchase
K. Wain
Chelsea, US
★★★★★ 3
Good concepts, but uneven depth
Format: Paperback
Some helpful prompt frameworks, but parts felt repetitive and a few sections stayed too high-level for advanced users. Beginners will likely benefit more than experienced practitioners. If you’re new to prompt engineering it’s a decent starting point; if you’re already building structured prompts daily, it may feel light.
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Reviewed in the United States on January 17, 2026

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