Alpinestars - Fluid Portl Jersey, Pant Combo (Youth)

Alpinestars Fluid Portl Youth Jersey 

The Alpinestars Fluid Portl Youth Jersey is made for riders who want a lightweight motocross jersey that breathes well and moves with your body.

The is sized and patterned for younger riders, using lightweight fabric, a comfortable collar, and an extended tail so it stays where it should while riding. It delivers the same ride-focused features as the adult gear, just scaled correctly.

Why We Like It

We like how this jersey disappears once you start riding – no bunching, no dragging, just clean airflow and easy movement on the bike.

Why It’ll Work for You

If you’re tired of heavy, soggy jerseys, this one gives you a modern fit with ventilation that helps you ride harder without overheating.

Key Features

• Breathable, moisture-wicking main body fabric
• Ventilated or mesh zones in key heat areas
• Ride-position cut for on-bike comfort and mobility
• Low-profile collar for use with helmets
• Extended drop tail to help keep jersey tucked
• Easy-care construction suitable for frequent use

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Match it with Alpinestars jerseys, pants, gloves, boots, and gear combos. For fit help, see our motocross jersey sizing guide.

Alpinestars Fluid Portl Youth Pants

The Alpinestars Fluid Portl Youth Pants are designed for riders who want moto pants that can handle crashes, roost, and long motos without feeling bulky.

Alpinestars balances stretch with structure so body position feels natural on the bike. Alpinestars blends pro-level mobility with abrasion zones that shrug off tip-overs.

Why We Like It

We like these pants because they stay in place when you ride aggressively, with enough stretch to grip the bike and move freely in the ruts.

Why It’ll Work for You

If you need pants that can survive regular riding and still feel good after wash cycles, this build gives you a solid mix of durability and performance.

Key Features

• Enhanced Performance and Comfort: The sport-fit Youth Fluid Portl Pants offer optimized levels of performance, comfort, and freedom of movement in the riding position, thanks to their lightweight, polyfabric construction, stretch corduroy panels, and pre-curved leg design
• Ergonomic Pattern for Advanced Rider Comfort: Ergonomic cut and 3D pattern construction for premium rider comfort and mobility
• The Youth Fluid Portl Pants have a 600D polyfabric main construction, with reinforced 600D polyfabric at the seat and knees for even greater durability
• Ergonomic cut and 3D pattern construction for enhanced rider comfort, unparalleled freedom of movement, and superior mobility
• The extended stretch corduroy fabric panels on the crotch, knees, back yoke, and inside legs offer superior freedom of movement, optimized fit, and enhanced rider comfort
• High-performance, synthetic leather reinforced inner knees provide soft grip contact with the bike, durability, and comfort
• Ratchet closure for a secure, personalized fit
• Mesh lining for enhanced rider comfort
• Zippered fly for ease of use

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Pair these pants with Alpinestars pants, jerseys, gloves, boots, and gear combos. For more buying help, see our motocross pants guide.

Alpinestars - Bionic Plasma Knee Protector (Youth)

Engineered specifically for younger off-road riders, the Bionic PLASMA Youth Knee Protector is lightweight, comfortable, and protective, featuring a removable Nucleon PLASMA knee protector embedded in a highly breathable chassis for enhanced rider comfort.

Key Features:

• Highly Comfortable: The Nucleon PLASMA knee protector is made from a USDA Certified Biobased viscoelastic material that absorbs and disperses impact energy while providing maximum coverage in all riding positions. Engineered for multi-directional pliability, the protector conforms to the knee for a snug and secure fit, and delivers reliable protection.
  
• Ventilated Chassis Design: The chassis features a 3D mesh front panel for superior levels of ventilation and airflow, along with abrasion-resistant fabric that covers the knee area.
  
• Stretch Mesh, Ventilated Construction: Soft, stretch mesh at the rear of the lower legs provides a comfortable fit for riders with various calf sizes, while the open knee construction behind the knee helps to prevent heat build-up while maximizes ventilation.
  
• Extended Coverage: Extra side padding for extended coverage.

Construction:

• USDA Certified Biobased, eco-friendly, and sustainable impact absorbing material.
  
• Extra side padding for extended coverage.
  
• Level 1 CE-certified Nucleon PLASMA knee protector is removable for easy cleaning.
  
• Constructed with a soft tactile inner padding for enhanced rider comfort.
  
• Pre-shaped construction features soft-touch, perforated stretchable padding for enhanced comfort and superior airflow.
  
• The anatomically sculpted upper calf and upper hem silicon strips keep the protector securely in position

Protection:

• Knee protector: EN 1621-1:2012 LEVEL 1

Alpinestars - Radar Glove (Youth)

Lightweight and with excellent comfort features, Alpinestars’ Youth and Kids Radar Glove incorporates a single-piece, stretch fabric upper and synthetic suede palm reinforcements for high levels of comfort and improved feeling with the bike’s controls.

Key Features

• Performance construction with a single layer palm and stretchable single layer top for optimized fit and feel.

• Synthetic suede palm for high levels of durability.

• Stretch fourchettes for increased flexibility.

Protection

• Rolling backhand and index finger for additional protection in key areas.

• Localized palm perforations on the palm for enhanced breathability.

• Strap closure for security.

• Thumb patch reinforcement for enhanced durability.

• Puller for quick and easy entry into the glove.

• Sublimated graphic on backhand.

Alpinestars - Supertech Vision Merica Goggles (Youth)

These are the “set-it-and-forget-it” youth goggles you buy once, then stop worrying about fog, slipping straps, or a cranky kid ripping them off mid-ride. The Merica graphic brings the heat, but the real win is a youth-fit frame that sits comfy on smaller faces and stays planted when they’re sweating and moving around.

Why We Like It:

Because kids are brutal on gear. They toss it in the truck, drag it through the dirt, and somehow still expect it to feel good. This goggle checks the boxes that actually matter: a flexible frame that doesn’t fight their face, soft foam that doesn’t turn into sandpaper, and airflow built in to help keep the lens clearer when they’re working hard.

Why It’ll Work for You:

If you’re buying for a child, the big thing is comfort and “stays put” confidence. The wide strap is silicone-backed so it grips the helmet and doesn’t walk around, and the multi-layer foam with fleece lining helps prevent hot spots on the cheeks and nose. The lens is polycarbonate with an anti-fog hard coat and 100% UVA protection, so you’re not just getting style, you’re getting real eye protection and clearer vision on the track or trail.

Variants / Options:

Adult and Youth versions available.

Key Features:

• Lightweight, ultra-flexible Polyflex frame for a better youth fit and feel 
  
• Multi-layer face foam with fleece lining for comfort against the skin 
  
• 40 mm woven strap with silicone backing to keep the goggles locked in place on
• the helmet 
  
• Polycarbonate lens with anti-fog hard coating and 100% UVA protection 
  
• Integrated tear-off posts 
  
• Molded wind channels to push air through the vent foam for more airflow and less condensation