Alpinestars Flex-AST 5 Denim, textile pants

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 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.

Features

• Premium Comfort: Lightweight monolayer denim with built-in mechanical stretch offers riders premium comfort and every day wearability
• Tailored Fit: Regular tapered fit for a modern silhouette that transitions effortlessly from road to street
• Casual Styling, Moto Protection: Clean, lifestyle denim aesthetic with built-in protection – the perfect everyday riding jeans
• Adjustable Armor Placement: Three-position adjustable knee protector pockets allow for a personalized fit and optimal impact coverage
• Protective Armor Inside: Equipped with Nucleon Flex Plus knee armor for enhanced comfort, breathability, and premium protection

Construction

• Engineered for Performance: Designed to meet Alpinestars’ FLEX-AST comfort specifications, the high-performance monolayer construction delivers lightweight durability and long-lasting comfort
• Comfortable Stretch Blend: Durable, lightweight fabric composition of 53% cotton, 30%+ polyester, and 17% polyamide offers a lightweight feel with built-in stretch for all-day comfort across varying climates
• Durable Construction: Hidden external double stitching and overlock seams ensure long-term structural integrity and lasting performance in impact-prone areas
• Ventilated Armor Pockets: Lightweight and breathable protector pockets are designed to maintain airflow, while securing the armor for effective impact protection and enhanced comfort
• Ergonomic Waistline: A raised back waist provides enhanced coverage and comfort in the riding position
• Functional Storage: Deep, easy-access hand pockets are designed for practicality – even while seated on the bike – keeping essentials secure and within reach
• Classic Denim Aesthetic: Heritage-inspired details include selvedge-look interior seam stitching with color contrast thread and subtle Alpinestars logo embroidery on the coin pocket, delivering an authentic denim finish

Protection

• Nucleon Flex Plus Knee Armor: Level 1 slim-profile protectors with 3D shaping and breathability for all-day comfort and protection
• Knee Protector Positioning Pocket: the pants feature 3-position, adjustable knee armor pocket, for convenient positioning of the protectors for an optimal coverage and a perfectly tailored fit
• Hip Protection Ready: Compatible with optional Bioflex Level 1 hip protectors – flexible, adaptive, and low-profile for discreet safety
• Certified A Garment: Meets the safety standards as a certified Class A Garment, ensuring optimal protection and performance
• Certified Safety Performance: Exceeds abrasion and tear strength thresholds by 20% in final wash and finish