The extremely lightweight Level 2 CE and UKCA certified Nucleon Flex Proi Full Back Protector Insert features a highly ventilated hybrid of Nucleon Cell and Nucleon Flex protectors for the optimum balance of force dispersion and flexibility, with a soft-touch 3D mesh liner for enhanced rider comfort.
The back protector insert is a full-length back protector, about 22% longer than regular back protector inserts. The Nucleon Flex Proi is compatible with all Alpinestars’ sport and touring jackets that have released since Spring 2022, as all jackets have a double pocket to insert either a regular or longer back protector insert. The goal of the Nucleon Flex Proi is to deliver full-length coverage in terms of protection like a fixed back protector does, but with the practicality of an insert.
1. In terms of construction, the hybrid technology blends the best properties of Cell and Flex technologies to create an ultra-protective solution that delivers premium, breathable performance, and maximum flexibility.
2. The protector has an ergonomically contoured dual zone outer shell constructed from an advanced polymeric blend with a solid Cell structure core framed by a more
flexible 3D Cell structure as the first line of defense; this is reinforced even further with the Nucleon Flex technology layer on the central back zone.
3. The protector is backed with a breathable soft-touch 3D mesh liner for maximum airflow and optimum rider comfort.
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How Should I Care for My Alpinestars Products?
Proper care of your Alpinestars products is essential to ensure their longevity and optimal performance. Care instructions may vary depending on the product, so it’s important to check the label on your item and consult the user manual if applicable. This will help you maintain the quality and function of your Alpinestars gear.
Can You Tell Me More About the Tech-Air® System?
The Alpinestars Tech-Air® system is a revolutionary airbag technology designed to provide riders with superior protection. It works by detecting impacts and inflating in milliseconds to create a protective barrier around the rider. This advanced system offers unmatched safety for those who push the limits on the road or track.
Refund Policy
Our refund policy allows you to request a return within 30 days of receiving your item. To be eligible for a return, the product must be in its original condition—unworn or unused, with tags, and in its original packaging. You will also need to provide the receipt or proof of purchase.
Damages and Issues
We ask that you carefully inspect your order upon delivery. If the item is defective, damaged, or if you received the wrong product, please contact us immediately so we can assess the issue and offer a solution.
Limited Lifetime Warranty
We stand behind the quality and craftsmanship of our products, which is why we offer a Limited Lifetime Warranty. If you encounter any defects in materials or workmanship, we will replace the faulty parts at no cost, as long as you provide proof of purchase from an authorized retailer.
In cases where an identical replacement is not available, we reserve the right to substitute the defective part or product with a comparable item that is currently in stock.
Order Processing
Orders are processed Monday through Friday, excluding weekends and major holidays. Once processed, your order will be shipped within 2-4 business days. After shipping, you will receive a confirmation email with tracking information.
Before placing your order, please double-check that your shipping address is correct to avoid any delays or complications.
International Shipping
We offer international shipping to most countries around the globe, with the exception of APO addresses and certain remote areas. Please review the available shipping options at checkout to ensure your location is eligible for delivery.
