List Price US $189
Union STR 2018-2020 Snowboard Binding Review
Riding Level Beginner - Expert
Quick Release No
Manufactured in China and Italy
Canted Footbed
Burton Channel Compatible Yes
Mini disc No
Approx. Weight Feels Normal

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Boot Support


Turn Initiation




Binding Adjustability Great
Stance Adjustability Excellent
Comfort Good
Ratchet System Good
Shock Absorption Good

Union STR 2020 - 2018 Review by The Good Ride

The Union STR is a good entry-level binding for those on a tight budget. While it doesn’t really compete with the higher end Union bindings it provides a lot more than many of its peers throughout the industry in this price range.

Ethics Statement: We don’t get paid by the manufacturer to write these reviews.  We do make money from the “Where To Buy” links, but this is our best attempt at an honest and objective review from an average riders’ perspective. 
How This Review Happened: 
We borrowed this for an extended demo and then returned it.

Days:  3
RidersJames (Size 9, 5’10” 185-195lbs)
Boots: Adidas Tactical ADV
Insoles: Sandsole Custom Insoles
Boards:  Yes GreatsCapita MercuryLib Tech Terrain Wrecker, Rome Powder Division 157

Highback Flex: Pretty middle ground and like a lot of high backs we like in Unions line that twist well but have less give when pulling straight back.

Binding to Boot Adjustability: There is a lot of good stuff going on when it comes to adjusting your binding around your boot. Especially for this price point. It has decent high back rotation, an adjustable heel loop but a fixed toe ramp/gas pedal. So it doesn’t have the adjustability of the Union Force or Atlas but it’s on par with the Strata and Contact Pro and even better than some higher-end Union binding. Another thing to mention is that since the 2019 season Union has these new washers in the heel loop that dont’ come loose like they used to so you don’t have to worry about tightening them every 5-10 days like you used to have to do.

Stance Width Adjustability: Union has a big channel that runs all the way through the disc that allows you almost as much stance width adjustability as the Burton Channel system but even better, it’s compatible with all boards.

Comfort: Pretty comfy for this price point. I didn’t feel any pressure points in the ankle or toe strap or heel loop.

Boot Support: The Union STR now has the same ankle straps as the Union Atlas which is pretty cool. It doesn’t have pre-curve like the Atlas either but it’s still a very supportive and light ankle strap. Union has other straps for sale at C3 here which is pretty unique compared to other companies.

Turn Initiation: Better than I thought but it’s just not that responsive. It’s best for paring it up with an easy turning easy to butter board.

Buttering/Feel Underfoot: Not much natural flex underfoot and it does not allow the board to butter as easy as even the Union Force and especially so the Contac Pro. I’d love to see them reduce the contact with the board like they do with so many other bindings.

Ratchet System: Very smooth and easy to get on and off. Feels like it’s very close to some of the higher end bindings in the Union line.

Shock Absorption: Pretty soft foam in the heel that does a great job at slow speed shock absorption. The Union STR isn’t quite as good for those that want to go big but it’s still pretty competent.

So overall, if you can put down some more cash and trade up to the 2020 Union Contact Pro that is a better all-around binding but in this price point, the Union STR is a well built binding for this price point.

Union STR Past Reviews

The Union STR is an entry level binding but Union tries hard to make sure that it isn’t too entry level.  If you can swing the contact instead that’s a better call but if you are on a very tight budget there really isn’t any competition here.  It’s even got some tech that I would like to see on other higher priced Union bindings.

The 2019 Union STR is pretty much the same as 2018 but the washers hold the ankle straps in place much better and don’t come loose like they used to.

Ethics Statement: We don’t get paid by the manufacturer to write these reviews.  No one is perfect and we do make money from the “Where To Buy” links below, but this is our best attempt at an honest and objective review from an average riders’ perspective.

Union STR Images

We try to get as many images of the Union STR, but forgive us if they're not all there.





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Union STR 2018-2020 Snowboard Binding Review SKU UPC Model

15/16 Union ST

Oct 19, 2017 by Jared
Ability Level: Average, on a good day • 
Riding Style: Ride everything • 
Days You Ride A Year: 15-25 • 
Height, Weight And Boot Size (for Boards, Boots & Bindings): 5'9, 185, just found out i'm a size 9.5EE 

I have the 15/16 version of the Union ST. I purchased them from a Craigslist seller for $90, new in box. They were intended to be a back up binding.

Boards: 2017 Salomon Assassin '57w, Gnu Park Pickle '56w, and a Lib Tech Tear Yea '56w.

Conditions- Powder, groomers, slush, ice...

Boots: At the time, 32 Lashed size 12

Flex– I would rate the chassis and highback at a 4. The metal heel loop and full sized disc stiffen things up a little.

Adjustability: The only thing you cannot adjust is the footbed. It has 1 position. Highback rotation, forward lean, heel loop, strap length, toe strap location, and full sized disc offer plenty of adjustability. I do rotate my highbacks and like James mentioned this causes a portion of it to dig into your boots by the ankle. I used a Dremel to cut off the protruding piece and rounded it off.

Comfort: Not too many hot spots, just the usually pinky toe pinch if you crank down too hard. The ankle strap has a medium thickness and width. The padding under heel is not bad, but under the forefoot it is very minimal. Even on long days I never felt too beat up, but the 32 Lashed does have a forgiving sole.

Heel-Toe Response: For such a soft binding response was respectable. The chassis under the forefoot has full board contact with no bushings. Straight plastic to board interface and the toe ramps help. I personally like this because it makes a soft binding have better toe side power. The down side is more chatter during carves. The highback did it’s job but something stiffer/wider would be nice.

Tip-Tail Response: The canting helps tip/tail response on my banana-tech board, but seemed to hinder it on my more camber dominant set ups. It may be a little dead underfoot compared to the Union Contact, but it worked well on my Assassin because of how the core is milled and complimented the hinge point.

Ratchet System: Nothing to complain about, but nothing to exciting. No slipping or sticking.

Boot Support: I would say middle of the road and on the surfy side. The toe ramp helps to keep you locked into the highback, but the highback itself was narrow and flat which makes it feel like there isn’t much backing you.

Shock Absorption: Under the heel you have 100% foam and the chassis is open. Under the forefoot like we said, minimal foam and lots of plastic. This leads to a firmer ride and harsh landings will be felt. This could be a positive if your boots have a lot of shock absorption.

The 2018 version has a stiffer highback with better support. In a shop I compared the 2018 STR to the Force and Contact. The STR’s highback is stiffer than both and has similar width/shape to the Contact. The ST/STR is an ideal binding for someone who likes med flex, sharp response, and more board contact. For $180 I do not see too many current-year offerings that compete.

4.0 4.0 1 1 I have the 15/16 version of the Union ST. I purchased them from a Craigslist seller for $90, new in box. They were intended to be a back up binding.Boards: 2017 Salomon Assas Union STR 2018-2020 Snowboard Binding Review

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