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- USA
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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
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Description
Alpinestars KR-Celli Back Protector Insert - BlackThe extremely lightweight, CE certified KR CELLi Protector insert features an articulated back shell plate for flexibility and riding fit, plus an advanced micro structure cell design for efficient impact energy absorption and high levels of airflow. The triple segmented back shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties. Unique cell micro structure designed
The extremely lightweight, CE-certified KR-CELLi Protector insert features an articulated back shell plate for flexibility and riding fit, plus an advanced micro-structure cell design for efficient impact energy absorption and high levels of airflow.
• The triple segmented back shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties.
• Unique cell micro-structure designed for advanced energy absorption, adaptivity, maximum breathability and air flow.
• Back Protection – EN 1621-2:2014 Level 1
• The ultra-lightweight Nucleon KR-CELLi Protector insert is developed in three waist-to-shoulder dimensions to cover all body sizes.
• The back protector’s structure design and structural change from center towards the outside provide the perfect balance between force dispersion and energy absorption.
• Ergonomic protection plate contours to the natural curve of the back ensuring optimum fit while riding.
• Horizontal flexion groves for an adaptive fit in different riding position.
• Soft comfortable airmesh on the body side of the protector offers maximum breathability and rider comfort.
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
4.5 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Happy husband
Size: Large, Color: (001) Black / Black / Pitch Gray
Husband loved the socks.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Good quality
Size: Large, Color: (100) White / White / Pitch Gray
These hold up really well. The extra cushion in the heels helps
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Reviewed in the United States on December 2, 2025
★★★★★ 5
My favorite socks.
Size: Medium, Color: (001) Black / Black / Pitch Gray
I love these socks. Whe. The time comes to replace them, I will be replacing them with the exact same ones.
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Reviewed in the United States on August 27, 2025
★★★★★ 5
The best athletic socks you can buy!
Size: X-Large, Color: White/Graphite (6-pairs)
These are the very best athletic socks you can buy period. I have had several pairs that are over 10 years old and still in wearable condition. We are talking several hundred washes. They are super comfortable and no show. I can't overstate how great these socks are.
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Reviewed in the United States on February 12, 2024
★★★★★ 5
Proper fit in all they wearability
Size: X-Large, Color: Black/Graphite (6-pairs)
I hate wearing any other type of socks anymore because you get fluid and my legs and these don't cut into my ankles they're very comfortable
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Reviewed in the United States on September 30, 2025