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New for 2015!
Alpinestars AST-1 WP Pants
  • Alpinestars AST-1 WP Pants - Black
  • Alpinestars AST-1 WP Pants - Black

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Video Reviews (2)

Alpinestars AST-1 WP Pants Videos

Alpinestars AST-1 Waterproof Pants

The Alpinestars AST-1 Waterproof Pants are an essential piece of kit for anyone who commutes daily or rides distance. The baked in waterproof membrane is affixed to the outer shell of the pants and not only keeps water out, but also allows moisture buildup to evaporate. Pre-curved legs, CE knee protectors and plenty of reflective accents give you all the essentials for any type of riding in any type of weather.


  • Multi-material main shell construction
  • CE certified knee protectors
  • Internal knee compartment allows adjustments of protection to fit it various leg lengths
  • Fixed waterproof and breathable membrane
  • Pre-curved leg construction for enhance fit and comfort in the riding position
  • Hand pockets
  • Hip pad compartments with PE comfort padding
  • Integrated high visibility reflective graphic details improve rider visibility in varying light conditions
  • Waist adjustments belt for precision fit
  • Waist connection zipper for secure integration with Alpinestars riding jacket
  • Premium YKK zippers

Men's Pants Sizing

Euro USA Alpha US Pant Size Waist (cm) Hip (cm) Thigh (cm) Inseam (cm) Height (cm)
42 32 2XS 26 68-72 83-87 50-51 73-74 159-163
44 34 2XS-XS 28 72-76 87-91 52-53 75-76 164-167
46 36 XS-SM 30 76-80 91-95 54-55 77-78 168-171
48 38 SM-MD 32 80-84 95-99 56-57 79-80 172-175
50 40 MD 34 84-88 99-103 58-59 81-82 176-179
52 42 LG 36 88-92 103-107 60-61 83-84 180-183
54 44 XL 38 92-96 107-111 62-63 85-86 184-187
56 46 XL-2XL 40 96-100 111-115 64-65 87-88 188-191
58 48 2XL 42 100-104 115-119 66-67 89-90 192-195
60 50 3XL 44 104-108 119-123 68-69 89-90 192-195
62 52 3XL-4XL 46 108-112 123-127 70-71 91-92 196-199
64 54 4XL 48 112-116 127-131 72-73 91-92 196-199

Note: Alpinestars sizes displayed on our website are in Euro sizing, use the chart above to convert your standard US size to Euro. 

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 Item # Manufacturer Product # Availability
Black / SM 1063115 3226116-10-S Available: Expect 1-2 business days lead time prior to shipment
Black / MD 1063116 3226116-10-M In Stock: Ships within 24 hours
Black / LG 1063117 3226116-10-L Available: Expect 1-2 business days lead time prior to shipment
Black / XL 1063118 3226116-10-XL In Stock: Ships within 24 hours
Black / 2XL 1063119 3226116-10-2X In Stock: Ships within 24 hours
Black / 3XL 1063120 3226116-10-3X Available: Expect 3-4 business days lead time prior to shipment
Black / 4XL 1063121 3226116-10-4X Available: Expect 3-4 business days lead time prior to shipment


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Use our Product Q&A for a chance to win our monthly $100 giveaways.

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.

Alpinestars AST-1 WP Pants
Already Asked: 4 Questions, 2 Answers
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RevZilla Store asked: Why did you choose this?
Wallace F: Water proof. Hope it works. Nov 10, 2015
Edward L: must have in wa state, will wear for trips, and whenever weather is iffy... Oct 26, 2015
Edward L asked: what hip pad armor should I purchase to use replace the foam pads that come I these? Thanks Oct 25, 2015
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Greg D asked: Can I where these over my pants/jeans ? Sep 15, 2015
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A shopper asked: Can these be used as " over pants?" Sep 3, 2015
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