Pay in installments of $42.49 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
509 SINISTER X7 GOGGLESINISTER X7 GOGGLE The 509 Sinister X7 Goggle is the next evolution of our Sinister series. With its quick change magnetic lens system, wide field of view, cylindrical anti fog lens, and frame shuttered venting for even more airflow, these goggles are ready to handle a wide range of weather and snow conditions. TECHNOLOGY FEATURES & SPECS Key Features 5MAG lens retention system (magnetic quick change lens system) Soft goggle frame for unparalleled
SINISTER X7 GOGGLE
The 509 Sinister X7 Goggle is the next evolution of our Sinister series. With its quick-change magnetic lens system, wide field-of-view, cylindrical anti-fog lens, and frame shuttered venting for even more airflow, these goggles are ready to handle a wide range of weather and snow conditions.
Key Features
- 5MAG lens retention system (magnetic quick-change lens system)
- Soft goggle frame for unparalleled comfort and fit
- Hard lens frame ensures an optimal fit, and a great sealing with 5MAG Lens Retention System
- OTG, Over The Glasses, compatible
- Shuttered Venting in frame scoop air in or closes off flow
- Easily replace lens for varying conditions → Shop Lenses
- Improved tints, low light, and contrast improving technologies including polarized, HCS, and photochromatic also available
- Removable outriggers
- WARNING for California Residents
Specs
-
VLT Conditions:
S0 = 80% to 100% Light Transmission
S1 = 43% to 80% Light Transmission
S2 = 20% to 43% Light Transmission
S3 = 10% to 18% Light Transmission
VLT (Visible Light Transmission) refers to the amount of light that can pass through the goggle lens. - Clear Tint – Night or Low-Light Conditions (VLT S0)
- Photochromatic Clear to Blue Tint – Night or Low-Light to Partly Cloudy/Sunny Conditions (VLT S0 to S2)
- Photochromatic Clear to Light Rose HCS Tint – Night or Low-Light to Overcast Conditions (VLT S0 to S1)
- Photochromatic Yellow to Amber Tint Night or Low-Light to Partly Cloudy/Sunny Conditions (VLT S0 to S1)
- El Dorado Mirror Sunset Tint – Partly Cloudy/Sunny Conditions (VLT S2)
- Hi Vis Mirror Light Yellow HCS Tint – Overcast, Low-Light Conditions (VLT S1)
- Light Rose HCS Tint – Overcast, Low-Light Conditions (VLT S1)
- Orange Mirror Light Rose HCS Tint – Overcast, Low-Light Conditions (VLT S1)
- Photochromatic Polarized Smoke Tint – Partly Cloudy/Sunny to Bright & Sunny Conditions (VLT S2 to S3)
- Polarized Smoke Tint – Bright & Sunny Conditions (VLT S3)
- Polarized Yellow Tint – Overcast, Low-Light Conditions (VLT S1)
- Raspberry Mirror Light Smoke Tint – Overcast, Low-Light Conditions (VLT S1)
- Red Mirror Smoke Tint – Bright & Sunny Conditions (VLT S3)
- Revo Mirror Smoke Tint – Partly Sunny Conditions (VLT S2)
- Yellow HCS Tint – Night or Low-Light Conditions (VLT S0)
509 University
- Learn How to Change the Lens here
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 22 reviews
Sort
Product Reviews
★★★★★ 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.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
★★★★★ 5
Necessary book to actually get value from AI tools
Format: Kindle
If you don't know how to prompt AI models correctly, you're missing out on substantially better results. This book has literally everything I could have asked for, it's an awesome resource.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 21, 2024
★★★★★ 5
Excellent Primer
Format: Paperback
"Foundation of Information Security: A Straightforward Introduction" stands out as a premier selection in 2024's literary landscape, particularly for those with a keen interest in information security. Published by No Starch Press, the book immediately catches the eye with its geeky cover art, appealing to enthusiasts and professionals alike. Beyond its visual appeal, the book offers a tactile satisfaction; the paper quality strikes the perfect balance of texture, enhancing the physical reading experience, while the ink quality ensures readability without the risk of smudging.
Having meticulously combed through its contents, it's evident that this book serves as an indispensable tool for information security professionals. Its comprehensive coverage, combined with an accessible approach to complex topics, makes it a valuable asset for both newcomers and seasoned experts in the field. The book's engaging writing style and practical insights contribute significantly to its status as a favorite read of the year, underscoring its importance in the professional development of information security practitioners.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2024
★★★★★ 5
Great book, and very up to date.
Format: Paperback
Great book, and very up to date.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 8, 2025
★★★★★ 5
Great book
Format: Kindle
This is must read book for individuals who are interested in the cyber security field. As a newbie, this provides a solid foundation on the technological concepts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2024