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Description
Alpinestars - A-4 Plasma Chest ProtectorAlpinestars A 4 Plasma Chest Protector The A 4 Plasma Chest Protector is built to give your upper body serious coverage without turning your setup into a bulky suit of armor. Anatomically profiled for all forms of off road riding, the A 4 PLASMA Chest Protector features a semi rigid thermoplastic polyhedron design chest protector and a Nucleon PLASMA back protector that are engineered to be lightweight, breathable, comfortable, adaptive, and
Alpinestars - A-4 Plasma Chest Protector
The A-4 Plasma Chest Protector is built to give your upper body serious coverage without turning your setup into a bulky suit of armor.
Anatomically profiled for all forms of off-road riding, the A-4 PLASMA Chest Protector features a semi-rigid thermoplastic polyhedron design chest protector and a Nucleon PLASMA back protector that are engineered to be lightweight, breathable, comfortable, adaptive, and protective. Key Features: Exceptional Comfort and Flexibility: The Nucleon PLASMA Back Protector is crafted from a USDA Certified Biobased viscoelastic material.
Why We Like It
We like how it disappears under a jersey while still offering confidence when the roost and rocks start flying.
Why It’ll Work for You
If you want one piece that works for track days and off-road loops, this protector has the coverage to back you up.
Variants / Options
Available in multiple sizes and sometimes youth options so riders of different builds can get dialed protection.
Key Features
- Exceptional Comfort and Flexibility: The Nucleon PLASMA Back Protector is crafted from a USDA Certified Biobased viscoelastic material. Designed for multi-directional pliability, the protector molds to the body for a close fit, effectively dissipating impact energy to deliver reliable protection. Lightweight and highly ventilated, this protector offers strong impact force dispersion and absorption while ensuring maximum coverage area in all riding positions.
- Lightweight and Ultra-Ventilated Chest Armor: The chest outer shell’s design is based on geodesic polyhedrons, and like a geodesic dome, less material is needed to achieve the desired structural strength and imposed load performance when compared to flat or unfaceted surfaces. This results in a protector where the whole is greater than the sum of all its parts, making the new A-4 PLASMA Chest Protector supremely lightweight and ventilated.
- Premium Comfort: The over-injected flexible side wings of the chest protector perfectly follow the body’s contours for superior comfort and freedom of movement.
- Optional Race kit: Engineered to be compatible with the Nucleon PLASMA Extended Roost Coverage kit which includes Upper and Lower Chest Extensions and an additional Y-Strap System, allowing riders to use the A-4 Chest Protector without the back protector.
- Rib and Shoulder Coverage: The A-4 PLASMA Chest Protector features highly perforated, adjustable, and detachable rib and shoulder padding for additional coverage against roost and impact.
- BNS compatible via the elasticated BNS pull tabs situated on the removable soft tactile thermoformed shoulder pads.
- Constructed from Certified Biobased, eco-friendly and sustainable impact absorbing material.
- Equipped with adjustable shoulder and side straps for an optimized performance fit.
- Removable soft tactile thermoformed shoulder padding for enhanced rider comfort.
- The lining on the back protector offers a soft tactile feeling against the skin while maintaining the integral structure of the protectors and reducing the risk of any material tearing.
- The lining is ribbed for superior airflow while also reducing the amount of material that is in contact with the skin.
- The perforated 3D mesh chassis also offers additional protection against tire roost.
- Bionic Neck Support compatibility via the BNS shoulder pull tabs.
- According to European statutory law, the CE mark is a conformity requirement for the marketing of this product. The following standards apply: Back protector: EN 1621-2:2014 LEVEL 1
- Chest protector: EN 1621-3:2018 LEVEL 1
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 6 reviews
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Product Reviews
★★★★★ 5
Great case for the price! Love the color!
Color: Sky Blue, Color: Sky Blue
I’ve had this case on my iPad (A16 11th gen) for a few months now and it’s held up really well. It still looks good with only a few minor scuff marks, which is expected with regular use.
The front cover has a slight magnetic feel, so it stays closed nicely, and I like that it folds back to prop the iPad up for watching or typing. It’s not super bulky but still gives good protection. Also has a pen holder spot on the side!
Overall, it’s a great affordable option if you want something simple, functional, and durable without spending a lot!
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Cute
Color: Purple
Fits like a glove
Lightweight and well made easy to hold not slippery. Looks very clean and seemless.
Worth every cent
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Quality case
Color: Black
Great protective cover for the price
Fits perfectly with no slipping
Has a bit of weight to it but not an issue
I bought the black cover and so far holds up well against fingerprints and smudges.
Shipping was prompt
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Functional, Sleek, & Surprising!
Color: Black
If you want a slim, durable, no-nonsense protective cover for your iPad Pro that doesn’t bulk up your setup, this ProCase protective cover hits the sweet spot. I’ve been using it daily for over 3 weeks, and here’s my honest take after testing in real life:
What I Loved…
- Lightweight, streamlined protection
From day one, this case stayed true to its promise. It doesn’t add unnecessary bulk. It feels solid in the hand but never feels heavy or clunky when carrying the iPad around. That balance is rare at this price point.
- Clean, professional aesthetic
The matte black finish looks great whether I’m in a meeting, on Zoom calls, or using the iPad casually. It doesn’t scream budget case, instead it gives a minimalist vibe.
- Strong everyday defense
The hard back and snug fit protected my iPad from the few accidental knocks and desk slides I put it through. No scratches or dents so far. It’s perfect for daily living and work use.
- Magnetized sleep/wake & easy handling
Opening the cover reliably wakes the iPad and closing it puts the screen to sleep. That feature alone saves battery life and feels like an Apple-level convenience.
What Could Be Better
- Not rugged drop protection
This is a protective everyday case, not a rugged armor shell. If you’re someone who drops your devices regularly or needs heavy-duty shockproof coverage, you’ll want something thicker.
Real-World Usage Notes
• Daily commute: slips easily into backpacks without adding weight
• Typing or viewing: the built-in stand angles (if available for your exact variant) are functional for watching videos or typing notes
• Button/port access: precise cutouts mean no struggle for speakers, USB-C, volume buttons or camera
Verdict…
This ProCase is a great everyday protector for iPad Pro owners who want sleek looks, practical protection, and Apple-like convenience without a huge investment. It’s not bulky or overbuilt. And that’s its biggest strength for most people.
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Excellent quality for my needs
Color: Dark Blue
I’ve had this case for nearly a year now. It has held up great and still looks brand new. I use my iPad probably less than the average user, but it still seems like it will last for years to come. I appreciate the space for my Apple pen. It stays secure without fear of falling out when the case face is open. However, I am still able to get it out without struggle. They trifold cover is great for propping up the iPad for hands free use. I’d buy again in the future if needed.
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Reviewed in the United States on May 31, 2026