$ 114.95

The Hiyak is Astral’s view of a proper bootie. It offers ground-conforming stability, foot protection and insulation without neoprene. The result is a lighter, more durable, fast drying water-boot with phenomenal gripping powers.

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Color: Black/Black

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  • Intended Use: Water, Boat
  • Uppers: Hydrophobic Canvas with 1060D ballistic nylon reinforcement rand. High top padded ankle protection with semi-rigid heel cup. 3mm quilted spacer-mesh lining. Hidden laces with Velcro Over-Flap. Reflective logo at heel and tongue.Water resistant laces.
  • Midsole: Removable, 7mm thick 45C closed cell EVA foam.
  • Outsole: G.ss highest friction G Rubber compound with razor-siping and drain holes toe and heel. 3.5mm thick. Non-marking.
  • Foot to Ground Distance: 12 mm heel, 11 mm ball.
  • Weight/shoe: 250g (8.82 oz)
  • Sizes: Men’s US 7-13 (Whole sizes only)
  • Fit: True to size (For half size, size down)

Flex Grip Outsole

This rubber allows excellent flexibility and sensory feedback for heightened grip and balance. Maximized surface area for high friction on smooth surfaces. Divided lugs for substantial grip on loose dirt Razor Siping maximizes edges that bite into surfaces upon flexion. 

Water Ready

All Astral shoes have a special relationship with water. Every component, from the thread to the laces are critically evaluated and chosen for its ability to hold up after constant soaking, shed water, and not accumulate funk. Many models have engineered drainage for water to come out while minimizing entry of silt.

Balanced Geometery

We believe that a foot’s position in a shoe should be similar to when barefoot. This allows excellent balance and biomechanically natural lifestyle.

Foot-beds are essentially level (only 1mm drop from heel to toe ) and provide medium arch support.  Tapered instep and heel area for better foothold and control Wide forefoot allows your feet and toes to spread out for stability.


The “ss” is for “Super Sticky” and we can confidently say that outsoles made with it provide the best grip in water-sports. Unlike other maximum friction compounds, G.ss is non-marking and provides good abrasion resistance. Its low durometer (measure of hardness) lessens impact and provides excellent conformity to surfaces.


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  • Once I figured them out, these are way more versatile...

    February 06, 2017

    Struggled with the velcro flat and laces coming loose, also the ankle flexibility for awhile until I simply cut off the over-strap and unlaced the ankle portion - ended up with a more secure 'fit' on the first pull of the laces and far more ankle flexibility for play boating, but with an extra level of padding I appreciate. I lace them high for SUP or Creeking, low for Play, and ALWAYS double knot the laces. The high tops are great even when laced low, for keeping rocks and sand out and add padding to your ankle bones when swimming or bushwhacking. Great versatility from one paddling shoe once you learn this trick.

    submitted by: ClayW, Rock Island TN

  • It's the best high-top for sea kayaking

    October 22, 2016

    I have fondness for Astral's footwear. I already own a pair of Brewers and a Rassler (Men's 10.5). I've been using both for the last two seasons. I really like the Rassler boot. It was an improvement over the prior two pairs of high tops which I have used with my dry suits over the last 13+ years. If I really split hairs I can come up with two things that are an annoyance with the Rassler:
    (1) Like many contemporary sneakers, they came with excessively long shoe laces. WTH?!
    (2) Although I went up a full size and a half in the Rassler, over my measured 9 size, it's just a little tight in the toe box when used with my dry suit and one pair of medium-heavy wool socks. It's not unbearable just slightly uncomfortable, but serviceable. I sometimes wonder if I should have gone with the 11, but I didn't want 'clown' feet.

    Recently I picked up a pair of Astral's Hiyak boots (Men's 10). While the Rassler comes in half sizes the Hiyak is only available in full sizes, however, this did not prove to be a problem. I picked the brains of Astral's staff and they suggested I go with the size 10 in the Hiyak. Honestly I was dubious. On paper that's a half size smaller than my Rasslers. The boots arrived just in time for the recent Mid-coast Sea Kayak Rendezvous in Maine where I gave the Hiyak a real-life workout over three days. The boots did not disappoint and the Astral staff did not lead me astray. The size 10 Hiyak was spot on fit-wise! The Hiyak provided tremendous protection for my feet and ankles from the rocky Maine coast and ever present barnacles. The boot was very comfortable and for once my foot/toes did not feel cramped while wearing a dry suit and insulative wool sock. Side-by-side and at a quick glance the Rassler 10.5 and Hiyak 10 look to be identical in size, but I closer examination it appears that the toe box on the Hiyak is slightly wider. That would account for why I find the Hiyak to have more toe room and comfort.

    What else did I like about the Hiyak beside fit and protection? :
    (1) The length of the shoe laces is appropriate for the boot size. Unlike the Rassler the laces on the Hiyak are not excessively long.
    (2) Once laced up the wearer covers any loose lacing with a protective velrco flap. I find that flap to be a great safety feature. I had a entrapment issue with another manufacturer's lace-up water shoes several years ago. That excess lace length snagged on a footpeg in my kayak while attempting a wet exit. I had hold my breath a bit longer; reach in and pull off the shoe.
    (3) The sole of the the Hiyak is ultra sticky on wet rocky surfaces. I never slipped once and I spent plenty of time hauling sea kayaks across the steep, rocky and wet Maine coast. The sole of the Hiyak also does a great job of self-cleaning all the firch one picks up. It is superior to the Rassler in that regard. My pair always seems to have crud sticking to the sole.
    (4) The Hiyak has a 3mm quilted mesh liner that provides insulation and additional padding. I believe it's another reason for the the boot's great fit and comfort. My Rasslers do not have the same lining.
    (5) When wearing a dry suit the Hiyak is the best footwear I have worn while sea kayaking and I would highly recommend them.

    Fwiw, I weighed the Rasslers and my new Hiyaks. They booth came in at 1 pound and slightly over 3 ounces.
    As with all gear reviews, YMMV.

    submitted by: Joe Galloway, Upstate, NY

  • The perfect creeking/exedition shoe

    October 01, 2016

    From leading kayaking expeditions to teaching high-schoolers at World Class Kayak Academy, I'm lucky enough to call kayaking my job and paddle at least 5 days a week. Having the stickiest rubber on durable shoes is not just a bonus, but a necessity. I feel 100% confident in these shoes, from setting safety to scouting and portaging, and love the extra ankle support in the Hiyaks! Unlike other expedition shoes they dry super quickly and fit/feel amazing, wether you are wearing a drysuit or going bare foot. Thanks for finally bringing the bootie that every kayaker needs to the world, you rock Astral!!!

    submitted by: Brendan Wells, White Salmon, WA

  • Astral Hiyaks for the win!

    September 06, 2016

    I've been wearing the Rasslers for almost 3 seasons now and love them, until I paddle the Braaap or my Mullet. They were way too bulky. Enter the Hiyak. These boots are great, slim yet supportive and fit perfectly into the Mullet last night. These are going to be my everyday boating shoes going forward! Love the siped soles and the lace covers! Excellent work Astral!

    submitted by: Eben Smith,

  • Fantastic design, but stiching needs some work

    July 02, 2016

    I would like to second the motion of the previous review, the stitching isn't very durable. I've had these for about 3 months. I'm primarily a 2 or 3 day a week WW kayaker, but I think a week of rafting is what did the stitching on the toe of one foot, and the side of the other in. When you need to wedge your feet between and under raft tubes, that fine red stitching doesn't take abrasion real well. Beyond the stitching problem, every other design aspect of these shoes is spot on. The soles are supper sticky, and very low profile. The mid ankle height is just enough to protect, but not be bulky. The drain holes and removable innersoles make drying quick. The sizing is spot on. I usually wear a 9.5 shoe, but the size 9 fit perfectly, barefoot or with a lightweight performance wool sock. I have loved these shoes since the moment I first put them on, and ever since. I may try the aqua seal idea to help preserve this pair. Kevlar thread may be a bit too much to ask for, but I like these shoes enough I'd pay for it.

    submitted by: David Caldwell, Wild Wonderfull, West Virginia

  • Badass set of kicks

    May 08, 2016

    Rugged, comfortable, amphibious.. Badass shoes right here. I not only work on some of the most active and demanding tv shows as a cameraman, i live a very broad outdoor lifestlye. I paraglide, kayak (class IV-V), surf (river and ocean), stand up paddle board.. To name a few. I use these kicks as cross-over shoes, when you're not sure which shoe to bring or if the weather might change and decide to start pouring rain... Its got great grip, good ankle support,is pretty dang light, and dries fast. I love them for multi-day kayaking trip, river surfing, and such.. But i recently put them to the test and used them for 3 weeks (everyday) in the jungles and oceans of Dominica. I was shooting on a show for Discovery throughout the island on several types of terrain beach, volcanic rock, river beds, thick jungle/plants, roots, super slippery rock, etc.. The hiyak held up, gave me some serious grip in precarious situations, and was able to dry out at night even despite the humidity and intermitten rain storms. I could have ended up with some serious trench foot. I'm in... Tested... On location... Approved!! In my book. Only micro down side is that the bottoms weren't padded out as much as,say, the "rassler"for that serious of terrain. Although i was albe to feel every bit of ground and rock underneath me as i walked, making super calculated moves (almost like rock climbing shoes), i wouldn't want to walk 100s of miles with these, but for what i do, i'll sacrafice a little padding in order to have that "billy goat" footing, you feel like you're glued to the terrain, no joke. Any ways, if you need to run around on the mountain, the river, and the ocean all in the same day.. This could be the all-around you need. Happy travels to the near and far side of the globe!!

    submitted by: Ryan Mac, Lotus California

  • Great shoe, but stitching doesn't last

    April 14, 2016

    I loved these shoes the moment I put them on, but after about two weeks worth of river time, they have busted apart at the seams. I had a friend say that they put a layer of aquaseal around all the stitching when they buy a brand new pair of these which makes them last longer, but I would expect better quality stitching right out the box. They seem to have everything else figured out as they are great fitting and not bulky which makes them comfortable to wear all day in a kayak. Plus they protect your drysuit socks well with the high cut. I would not recommend until they figure out the stitching on the sides of the shoe other wise you'll be busting out of them in no time. Previously owned a pair of brewers and they did this too but after two full rafting seasons, which is a bit more acceptable. 14 days of WW kayaking is not.

    submitted by: S, British Columbia

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