Alpinestars Flex-AST 5 Denim Pants, Motorcycle Denim Pants, Indigo Washed, worn with a black performance t-shirt and black sneakers, featuring a tapered fit and monolayer stretch denim construction for urban riding

Alpinestars Flex-AST 5 Denim Pants - Short, Indigo Washed, urban motorcycle jeans with a tapered fit, worn by a male model with a black tight-fitting shirt and black sneakers, classic denim style for road-to-street transitions

Alpinestars Flex-AST 5 Denim Pants, Indigo Washed blue, rear view showing tapered urban fit, worn by model with black performance t-shirt and sneakers, casual motorcycle protective wear

Alpinestars Flex-AST 5 Denim Pants, Indigo Washed, urban motorcycle pants with a tapered fit, shown from the rear on a model wearing a black t-shirt and sneakers, featuring a clean five-pocket design and monolayer stretch construction

Alpinestars Flex-AST 5 Denim Pants in Indigo Washed, urban motorcycle jeans with a tapered fit, worn by a male model with a black short-sleeved base layer featuring red accents, casual road-to-street styling

Alpinestars Flex-AST 5 Denim Pants - Short, Indigo Washed blue motorcycle jeans, back view featuring rear pockets and a small black Alpinestars tag, worn with a black compression shirt with red stitching, casual urban riding apparel.

Flex-AST 5 Denim Pants - Short

urban contemporary pants

Regular price: €189,95

Size

Size guide

Color Indigo Washed

Length

Regular

Product variants

Earn 189 points with Alpinestars Membership

CE-Certified Garment

A Class

Engineered for urban riders, the Flex-AST 5 Denim Pants combine protective monolayer stretch denim with a clean, tapered fit for all-day comfort and casual styling. CE certified Class A performance exceeds abrasion and tear standards by 20%, featuring Nucleon Flex Plus Level 1 knee armor in adjustable pockets. Lifestyle denim styling conceals moto-specific protection, with hip protector compatibility and refined detailing for seamless road-to-street transitions.

Monolayer Stretch Denim: Single-layer construction eliminates bulk while delivering CE-certified protection and all-day comfort
Nucleon Flex Plus Knee Armor: CE Level 1 protectors included—3D-shaped, breathable, and slim for discreet protection
3-Position Adjustable Pockets: Customize knee armor placement for personalized fit and optimal impact coverage
Exceeds CE Class A Standards: 20% better abrasion and tear resistance than baseline safety certification
Modern Tapered Fit: Urban-ready silhouette with riding ergonomics including raised back waist and accessible pockets

CE Class A Certified Garment: Meets EN 17092 Class A safety standards for protective motorcycle apparel with verified impact and abrasion resistance.
CE Level 1 Knee Protection: Nucleon Flex Plus knee armor certified to EN 1621-1 standard provides impact absorption across the knee joint.
Adjustable Knee Armor Placement: Three-position protector pockets enable precise vertical positioning for optimized coverage and personalized fit.
Enhanced Abrasion Performance: Exceeds CE EN 17092 abrasion and tear strength thresholds by 20% in tested zones for reliable slide protection.
Hip Armor Compatible: Accepts optional Bioflex CE Level 1 hip protectors for expandable side-impact coverage (armor sold separately).

Monolayer stretch denim construction engineered to meet FLEX-AST performance specifications
Fabric composition: 53% cotton, 30% polyester, 17% polyamide with integrated mechanical stretch
Hidden external double stitching and overlock seams in impact-prone areas for structural integrity
Ventilated armor pockets with mesh lining and three-position adjustable knee protector placement
Raised back waist panel for extended coverage in riding position
Deep-cut hand pockets with reinforced pocket openings
Selvedge-look interior seam construction with contrast thread stitching
Embroidered Alpinestars logo detail on coin pocket