Product Details
Alpinestars Flex-AST 10 Tough Max Denim Trouser Dark Blue
The Alpinestars Flex-AST 10 Tough Max Denim Trouser Dark Blue is a pair of AAA-rated riding jeans with a regular tapered fit and single-layer LYCRA® TOUGH MAX™ denim.
Denim and protection
T400® fibres provide recoverable stretch, while COOLMAX® yarn helps move moisture away from the skin. CORDURA®, cotton and Nylon 6.6 contribute to the technical construction, with Level 2 Nucleon Morph STEALTH knee and hip protectors and adjustable knee-protector positioning.
Key features
- Single-layer LYCRA® TOUGH MAX™ technical denim construction combines T400® fibre, COOLMAX® yarn, CORDURA®, and cotton spun with Nylon 6.6 to deliver abrasion resistance, durable stretch, and everyday riding comfort.
- LYCRA® TOUGH MAX™ and T400® fibres provide durable multidirectional stretch that moves with the rider, retains its shape, and helps prevent sagging over time.
- Integrated COOLMAX® filament yarn wicks moisture away from the body to keep riders cool, dry, and comfortable in warm or variable riding conditions.
- Technical denim construction delivers up to twice the strength of standard denim for enhanced resistance to abrasion and tearing and an extended garment lifespan.
- Ultra-slim Nucleon Morph ST Level 2 protectors are anatomically shaped for the natural riding position, adapting to the rider‘s body contours to deliver optimal coverage, effective impact protection, and enhanced riding comfort.
- Single-layer LYCRA® TOUGH MAX™ technical denim combines T400® fibre, COOLMAX® yarn, CORDURA®, and cotton spun with Nylon 6.6 for the optimum blend of durability, stretch, moisture management, and everyday riding comfort.
- Hidden dual seams and overlock stitching on the outer legs, combined with double stitching and overlock construction on the inner legs, enhance structural strength and durability.
- Reinforced knee and hip areas provide additional durability in critical wear zones.
- Traditional five-pocket construction for everyday practicality.
- Metal zip fly provides a smooth, durable, and secure front closure.
- Faux-selvedge detailing helps prevent fraying while delivering a clean, look.
- Leather rear patch, branded belt loop and rivets, and woven back-pocket patches add distinctive Alpinestars finishing details.
- Yellow contrast stitching and white LYCRA® TOUGH MAX™ branding on the lower leg
- Regular tapered fit delivers a contemporary silhouette with comfort and mobility on and off the bike.
- Available in short and long versions to accommodate a wider range of riders.
- Low-profile, 10 mm Nucleon Morph STEALTH Level 2 knee protectors provide extended coverage, effective impact protection, efficient airflow, and lightweight comfort. Ultra-slim and adaptive, they contour to the rider‘s knees for all-day comfort.
- Nucleon Morph STEALTH Level 2 hip protectors provide ultra-slim, adaptive impact protection while maintaining everyday comfort and a discreet profile.
- Three-position adjustable knee protector pockets, spaced 3 cm apart and identified by colour-coded stitching, allow riders to fine-tune protector height for optimal coverage and a personalised fit.
- 2020, Class AAA.
Size Guide
| Size | UK Size | Euro Size | Short Leg | Regular | Long Leg |
|---|---|---|---|---|---|
| XS | 28 | 44 |
28 |
30 |
32 |
| S | 30 | 46 | 29 | 31 | 33 |
| M | 32 | 48 | 29 | 31 | 33 |
| L | 34 | 50 | 30 | 32 | 34 |
| XL | 36 | 52 | 31 | 33 | 35 |
| XXL | 38 | 54 | 32 | 34 | 36 |
| 3XL | 40 | 56 | 33 | 35 | 37 |
| 4XL | 42 | 58 | 33 | 36 | 37 |

