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Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Alpinestars - Nucleon Kr-Celli ProtectorAlpinestars Nucleon Kr Celli Protector 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. Features: The ultra lightweight Nucleon KR CELLi Protector insert is developed in three waist to shoulder dimensions to cover all body sizes The triple segmented
Alpinestars - Nucleon Kr-Celli Protector
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.
Features:
- The ultra-lightweight Nucleon KR-CELLi Protector insert is developed in three waist-to-shoulder dimensions to cover all body sizes
- The triple segmented back shell plate is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties.
- The back protector’s structure design and structural change from centre towards the outside provide the perfect balance between force dispersion and energy absorption.
- Unique cell micro-structure designed for advanced energy absorption, adaptivity, maximum breathability and air flow.
- 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
4.0 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
So cute
Size: One Size, Color: Medium Ruby
Love it love the color wow
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Shade your eyes, scalp and face from intense summer in style!
Size: One Size, Color: Purple
Love this hat!! Bringing it with me to the Carribean, so as to help shade my face from the intense tropical sun. It is so cute and love the color too. Fits great, and has adjustable strap in back of hat. Well made with quality material.. not flimsy!
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Reviewed in the United States on February 22, 2026
★★★★★ 5
Awesome hot weather hat.
Size: One Size, Color: (025) Castlerock / Castlerock / Reflective
Very thin material which makes it perfect for the summer. I love to wet it and then wear it when it’s really hot. Great quality.
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Reviewed in the United States on March 29, 2026
★★★★★ 5
Best sun cap
Size: One Size, Color: (025) Castlerock / Castlerock / Reflective
Lightweight, comfortable, and fits my XL head
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great running hat.
Size: One Size, Color: (001) Black / Black / Reflective
I absolutely love this hat, it is so cute and great for warm weather. I especially love to run with it, you can tighten it easily so it does not blow off if it is windy.
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Reviewed in the United States on August 17, 2025