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Alpinestars S-MX 5 Waterproof Boots
  • Alpinestars S-MX 5 Waterproof Boots - Black
  • Alpinestars S-MX 5 Waterproof Boots - Black/Red/Florescent Yellow

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Alpinestars S-MX 5 Waterproof Boots Videos

Alpinestars S-MX 5 Waterproof Boots

The S-MX 5 Waterproof boot has been created as a performance road and track boot, with built-in weather protection. Incorporating the latest technical footwear design and material know-how, the S-MX 5 WP is notable for its comfort, hugging fit, safety performance and wet weather performance.


  • Alpinestars exclusive waterproof and breathable membrane liner ensures 100% weather protection, with an integrated gusset over entry aperture to prevent water penetration down the leg.
  • Durable, high-tech micro-fiber upper construction offering a high level of flexibility
  • Double injected PU shields the shin, ankle, calf, toe and heel from impact while minimizing abrasion
  • Inner protection is given by a double injected panel connected to the heel counter, hidden beneath the outer shell and running up the outer ankle
  • Quick drying polyamide lining is laminated with open cell foam and high density contoured padding to absorb shocks to the foot area
  • The S-MX 5 boot is CE certified
  • Innovative air vents at the ankle, heel and forefoot are covered with a specially designed mesh to provide unmatched levels of rider comfort
  • Large ‘throat’ profile instep and Achilles flex bellows for superior flex and comfort
  • MTP mesh liner and anatomical, removable, PU Foam foot bed keeps the foot cool and comfortable
  • A fully vented version is also available in Black
  • Innovative inner (medial) side entry opening/closure system that features an elastic mounted zipper with an extra wide Velcro® flap, to give a precise, comfortable fit and wide opening aperture for ease of access
  • Highly ergonomic, lasting for ultra precise fit
  • Exclusive compound rubber sole features structured shank reinforcement for added support to the arch area
  • Interchangeable bi-injected PU toe slider with snap-in assembly

Alpinestars Men's Footwear Sizing

Sizing Notes!

We have found the EU-->USA sizing conversions as presented here to be slightly off. Our recommendation for Alpinestar's Men's Footwear: 43: 9-9.5 44: 10-10.5 45: 11

EU Size USA Size
36 3.5
37 4
38 5
39 6
40 6.5
41 7.5
42 8
43 9
44 9.5
45 10.5
46 11.5
47 12
48 12.5
49 13.5
50 14

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How To Measure

FT Feet What size shoe do you wear?
Product Style RevZilla Item # Manufacturer Product # Availability
Black / 36 440103 224309-10-36/34020132 Available: Requires 5-6 business days lead time prior to shipment
Black / 37 440104 224309-10-37/34020133 Available: Requires 5-6 business days lead time prior to shipment
Black / 38 440105 224309-10-38/34020134 Out of Stock
Black / 39 440106 224309-10-39/34020135 Available: Requires 5-6 business days lead time prior to shipment
Black / 40 440107 224309-10-40/34020136 Only 1 Left: Ships next business day
Black / 41 440108 224309-10-41/34020137 Out of Stock
Black / 42 440109 224309-10-42/34020138 Only 1 Left: Ships next business day
Black / 43 440110 224309-10-43/34020139 Out of Stock
Black / 44 440111 224309-10-44/34020140 In Stock: Ships next business day
Black / 45 440112 224309-10-45/34020141 Out of Stock
Black / 46 440113 224309-10-46/34020142 Out of Stock
Black / 47 440114 224309-10-47/34020143 Out of Stock
Black / 48 440115 224309-10-48/34020144 Only 1 Left: Ships next business day
Black / 49 439442 224309-10-49/34020145 Available: Requires 2-5 business days lead time prior to shipment
Black / 50 440116 224309-10-50/34020146 Out of Stock
Black/Red/Florescent Yellow / 36 887398 224309-136-36 Out of Stock
Black/Red/Florescent Yellow / 37 887399 224309-136-37 Out of Stock
Black/Red/Florescent Yellow / 38 887400 224309-136-38 Out of Stock
Black/Red/Florescent Yellow / 39 887401 224309-136-39 Out of Stock
Black/Red/Florescent Yellow / 40 887402 224309-136-40 Out of Stock
Black/Red/Florescent Yellow / 41 887403 224309-136-41 Out of Stock
Black/Red/Florescent Yellow / 42 887404 224309-136-42 Out of Stock
Black/Red/Florescent Yellow / 43 887405 224309-136-43 Out of Stock
Black/Red/Florescent Yellow / 44 887406 224309-136-44 Out of Stock
Black/Red/Florescent Yellow / 45 887407 224309-136-45 Out of Stock
Black/Red/Florescent Yellow / 46 887408 224309-136-46 Out of Stock
Black/Red/Florescent Yellow / 47 887409 224309-136-47 Out of Stock
Black/Red/Florescent Yellow / 48 887410 224309-136-48 Available: Requires 5-6 business days lead time prior to shipment
Black/Red/Florescent Yellow / 49 887411 224309-136-49 Available: Requires 5-6 business days lead time prior to shipment
Black/Red/Florescent Yellow / 50 887412 224309-136-50 Out of Stock


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Alpinestars S-MX 5 Waterproof Boots 4.3 5 25 25
Great boots, no issues so far. I've ridden both of my bikes with these boots on and have had a completely positive experience, they haven't left me at any point wishing they had some better feature or comfort. I have a CBR250R and a CBR600RR, standard and supersport riding positions respectively. These boots are comfortable for both, and I have as much tactile response for foot controls as I've had on previous boots, no issues there. The zip and velcro closure is very secure, doesn't loosen up over the ride. My feet don't get hot or cold, no numbness. As far as sizing goes, I wear a 10D work boot, I got size 44 in these boots and they're perfect. I wore them for a couple hours a few nights in a row to make sure there were no fitment issues. The only drawback I can think of is pretty minor, these boots aren't the greatest to walk around in, but that's not what they're made for. They aren't super uncomfortable for walking in, but they are of course a bit stiff due to the protective structure. I haven't been caught in the rain yet, so I can't attest to the waterproof-ness of these boots, but even if I had, it's going to come down to how prepared the individual is, and without proper matching pants, waterproof boots won't do much. For comfortable riding protection on a short trip or a long trip (I've done 6-7 hours in one go without taking them off) these boots are fantastic. I'd recommend them to anyone who can afford them. May 24, 2016
Will not buy again These boots were comfortable and waterproof initially. However, they became unbearable to wear after a couple of seasons due to protective elements above the big toe area becoming displaced (broken?) and pressing down on the top of the big toe. The same issue occurred in both boots, Waterproofing was good for the first season but after the second season both boots were no longer waterproof. April 4, 2016
Excellent, comfortable. durable, dry I have based any answers based on durability on my experience with my Alpinestars S-MX4 boots. These are comfortable, fit well and offer more lateral support than most. They are not quite track-worthy for protection, but a fine compromise in providing both comfort and safety. My S-Mx4s lasted 12 years. They were waterproof till the end, even when worn almost completely through. My only real complaint with my old boots was the fact that the soles were not replaceable - Sidis are. , I would have replaced the soles if I could have. Had I been able to do so, I would still be wearing them. Again, absolutely waterproof, which means, of course, no airflow.. February 23, 2016
Alpinestars S-MX 5 Waterproof Boot Background; Size 10 shoe size wearing Euro size 44. Definitely waterproof, have had them for 3 years now and they are still great. The fit is great easily wear thicker socks and still be comfortable or thinner socks if you had to you could wear it year rounds except for the hottest days (I usually switch to my vented S-MX plus) November 9, 2014
A-Stars S-MX 5 WP This is my second pair, loved the first... They were trashed when I was hit by a car in 2011, so I replaced them with the same thing. Great boot, great fit, actually waterproof! I have been stuck in some nasty storms and my feet were the driest part of me. Like the style and A-Stars sells some cool magnesium toe sliders you can put on to replace the plastic ones if you want something a bit tougher. Great boot! September 15, 2014
Not waterproof I've contacted the manufacturer 6 times about this issue over the past few months. No response. I bought them in late February of last year, and after about 7 months; they are no longer waterproof. I can't even ride 30mph through fog or on a wet road without my sock getting wet. They have not suffered a crash, nor been dipped in acid or any other corrosive substance. I'm very displeased with the performance of the boots, especially when their primary feature doesn't work after 7 months. I live in NW Washington, so this is very inconvenient. I write this review with an absolutely soaked left foot from a 30 minute ride in rain. Other than them not actually being waterproof, they've been great. April 24, 2014
Really warm If you're looking for a warm and waterproof boot, these are IT. In Nike's I'm a US 10, in these I'm a US 9. They're not broken in yet so the fit is still very snug (like pinky-getting-numb snug). But I'm sure that once they're broken in, they'll be perfect! I already own a pair of vented A* SMX Plus boots, also 9's and they are perfect after I broke them in. I can even fit a thicker/warmer sock in them. March 17, 2014
Compact and functional They are comfortable, compact and functional. I've had bulkier boots that made it harder to shift. These are just right in that they allow ankle movement for shifting but still provide protection. Haven't used them in the rain yet but they "feel" waterproof. December 2, 2013
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