Alpinestars AST-1 WP Pants
Multi-fabric shell construction yields the optimal combination of durability, protection and weight. Featuring ballistic nylon reinforcements on thighs, knees and seat area. The built-in waterproof and breathable membrane will keep you protected from the elements. Articulated knee construction and pre-curved legs for superior fit and comfort. Impact protection provided by removable CE certified knee protectors and internal hip compartments with ergonomically tapered PE protective foam padding.
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Have a functionality, fit, or otherwise product-specific question about the Alpinestars AST-1 WP Pants? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.
View sizing information on this page as well as on Alpinestars.com

| Alpha Size | US Size | Euro Size | Waist (in) | Hip (in) | Inseam (in) | Height (in) |
|---|---|---|---|---|---|---|
| XS | 28 | 44 | 29 7/8 | 36 1/4 | 30 | 69 |
| S | 30 | 46 | 31 1/2 | 37 3/4 | 32 | 70 |
| M | 32 | 48 | 33 1/8 | 39 7/8 | 34 | 71 |
| L | 34 | 50 | 34 5/8 | 41 | 34 | 72 |
| XL | 36 | 52 | 36 1/4 | 42 1/2 | 36 | 73 |
| 2XL | 38 | 54 | 37 3/4 | 44 1/8 | 36 | 75 |
| 3XL | 40 | 56 | 39 3/8 | 45 5/8 | 38 | 76 |
| 4XL | 42 | 58 | 41 | 47 1/4 | 38 | 77 |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit.
Click here to see the full Alpinestars Size Chart| Product Style | RevZilla SKU ID | Manufacturer Product # | Availability |
|---|---|---|---|
| SM | 799665 | 3226112-10-S | In Stock: Ships within 24 hours |
| MD | 799676 | 3226112-10-M | In Stock: Ships within 24 hours |
| LG | 799687 | 3226112-10-L | In Stock: Ships within 24 hours |
| XL | 799701 | 3226112-10-XL | In Stock: Ships within 24 hours |
| 2XL | 799702 | 3226112-10-2XL | In Stock: Ships within 24 hours |
| 3XL | 799703 | 3226112-10-3XL | In Stock: Ships within 24 hours |
| 4XL | 799705 | 3226112-10-4XL | Available: Usually ships within 3 business days |