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Alpinestars Flex-AST 5 Denim Pants in Black Washed, urban motorcycle riding jeans with a tapered fit, monolayer stretch denim construction, and classic five-pocket design, front three-quarter view
  • Alpinestars Flex-AST 5 Denim Pants in Black Washed, urban motorcycle riding jeans with a tapered fit, monolayer stretch denim construction, and classic five-pocket design, front three-quarter view
  • Alpinestars Flex-AST 5 Denim Pants, Motorcycle Jeans, Black Washed, back view showing rear pockets and Alpinestars logo patch, monolayer stretch denim construction with a regular tapered fit
Flex-AST 5 Denim Pants - Short

Flex-AST 5 Denim Pants - Short

urban contemporary | pants

$239.95
Color:Black Washed
Flex-AST 5 Denim Pants - Short Flex-AST 5 Denim Pants - Short

Size:28

Size guide

CE-Certified Garment

A Class
Description

The FLEX-AST 5 Denim Pants are protective riding jeans reimagined for everyday wear. Designed with a lightweight monolayer stretch denim construction and a clean, tapered fit, they deliver all-day comfort and casual styling without compromising on safety. Engineered to exceed performance specifications and CE certification standards, these jeans offer discreet, built-in protection with refined detailing and a modern wash and finish—making them an ideal choice for riders who want all-day comfort and everyday practicality with built-in moto-specific protection.
Key Features
  • Nucleon Flex Plus Knee Armor: CE Level 1 protectors included with 3D shaping and ventilation for impact protection without restricting movement.
  • Exceeds CE Class A by 20%: Surpasses abrasion and tear resistance certification thresholds while maintaining clean denim aesthetics.
  • Monolayer Stretch Denim: Single-layer construction with mechanical stretch delivers freedom of movement and all-day comfort without added bulk.
  • 3-Position Adjustable Armor Pockets: Customize knee protector placement for optimal coverage and personalized fit based on riding position.
  • Regular Tapered Fit: Clean, modern cut maintains casual aesthetics while integrating moto-specific protection features.
Protection
  • CE Class A Garment Certified: Meets CE motorcycle protective garment standards for verified impact and abrasion resistance.
  • Exceeds CE Abrasion Requirements: Surpasses mandatory abrasion and tear strength thresholds by 20%, ensuring enhanced protection in slide zones.
  • Nucleon Flex Plus Knee Armor: CE Level 1 certified impact protectors included for tested shock absorption and knee coverage.
  • Adjustable Knee Protection: Three-position pocket system enables precise vertical placement of armor for optimal coverage based on rider dimensions.
  • Hip Protector Compatible: Accepts optional Bioflex CE Level 1 hip protectors for comprehensive lower-body protection.
  • Strategic Impact Coverage: Armor positioned at knees and hips—primary contact zones in motorcycle incidents.
Construction
  • Monolayer stretch denim construction
  • Fabric blend: 53% cotton, 30% polyester, 17% polyamide
  • Double-stitched seams with overlock finishing in impact zones
  • Ventilated protector pockets with integrated armor retention
  • Three-position adjustable knee armor pocket
  • Extended rear waistband panel
  • Deep hand pocket construction
  • Contrast-thread interior seam stitching (selvedge-inspired)
  • Embroidered Alpinestars logo on coin pocket
Shipping & Returns
  • Free Shipping On Orders $99+
  • Free 30 day exchanges and returns
Reviews
SKU 8054866078439 EAN 3321626-117-28

Compatible Protection

Nucleon Flex Pro Knee Protector

Nucleon Flex Pro Knee Protector

Nucleon Flex Pro Knee Protector
$44.95

For product size:

Nucleon Flex Plus Knee Protectors

Nucleon Flex Plus Knee Protectors

Nucleon Flex Plus Knee Protectors
$29.95

For product size:

Bioflex Hip Protectors

Bioflex Hip Protectors

Bioflex Hip Protectors
$29.95

For product size:

Alpinestars Flex-AST 5 Denim Pants in Black Washed, urban motorcycle riding jeans with a tapered fit, monolayer stretch denim construction, and classic five-pocket design, front three-quarter view

Flex-AST 5 Denim Pants - Short

28 / Black Washed
$239.95

Flex-ast 5 Denim Pants

The Flex-AST 5 Denim Pant is a lightweight protective denim pant providing everyday casual comfort and style. Designed for leisure riding and all-day comfort both on and off the bike.

Comfort Construction

Monolayer lightweight construction with built in mechanical stretch.

Convenient Storage

Deep hand pockets for riding comfort when loaded.

Casual Fit

High back waistline for riding comfort and protection with a regular tapered fit.

Customizable Protection

CE Level 1 Nucleon Flex Plus knee armor delivers ventilated, low-profile protection with adjustable internal pockets for a custom fit with Bioflex Level 1 armor at hip.

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