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Union Ultra
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Union Ultra
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Union Ultra
Model Information

Union Ultra

Women's Snowboard Binding

$579.99
$579.99
Sold out
Tax included. Shipping calculated at checkout.
S M L
Size Chart
Only 2 left Only 6 left Only 1 left Only 4 left Only 8 left Only 1 left Only 1 left Only 3 left Only 0 left Only 0 left Only 2 left Only 0 left Only 1 left Only 4 left Only 0 left

Find My Size | Based on Women's Size Chart arrow icon union

Select
US
EURO
UK
MONDO
Select
*-5.5
5.5-7.5
8-10
10.5-13
13-15
2-4.5
4.5-6.5
7-9
9.5-12
12-14
34-37
37-40.5
41-43
43.5-46
46-48
21-23.5
23.5-25.5
26-28
28.5-31
31-33
4-6.5
6.5-8.5
9-11
2-4.5
4.5-6.5
7-9
34-37
37-40.5
41-43
21-23.5
23.5-25.5
26-28
11C-3K
3K-5.5K
5.5K+
10K-2
2-4.5
4.5-6.5
28-34
34-37
37-40.5
17.5-21
21-23.5
23.5-25.5
YOUR SIZE IS: Mini XS S M L XL
Must select color and size.

Main Information

Union Ultra

Strap in to the most comfortable snowboard binding ever developed. The Union Ultra provides a flexible and cushioned ride feel like you’ve never experienced before. Each component of the Ultra acts as a suspension system for your snowboard boots, loading and unloading with each movement as you ride. Welcome to the future of snowboard binding design.

warranty union
THE UNION WARRANTY
LIFETIME FOR BASEPLATE / HEELCUP.
1 YEAR FOR EVERYTHING ELSE.
Riding Category
Freestyle Rating: Freestyle bindings are designed for riders looking for the ultimate freedom, comfort and that “loose truck” feel. These bindings are generally best suited for riding park or riders looking for a more soft and surfy board feel.

All Mountain Rating: All Mountain bindings are generally mid-flexing and built to handle all terrain and all riding styles.

Performance Rating: Performance bindings are stiffer, provide instant edge-to-edge response, and the most stable board connection possible. Performance bindings are generally best suited for high speed carving or ridding steep technical terrain.
freestyle
Freestyle
Good
Great
freestyle
All Mountain
Good
Great
freestyle
Performance
Good
Great
Binding Flex
Union Bindings come in a variety of flex ratings. The baseplate, highback, straps, bushing and disk all have different stiffnesses to help give a specific ride feel and function. Softer flexing bindings are generally used for more surfy or freestyle riding, while stiffer bindings are generally used for more hard charging and responsive freeriding.

Overall Flex

6/10

Soft
Stiff
Rider: Jess Kimura
Video: Aaron Leyland
Specifications

Key Features

{"baseplate":{"active":true,"title":"Stage 11 ASYM Duraflex ST Baseplate","description":"By removing excess material in the toe and heel of the baseplate, and utilizing a brand new asymmetrical shape, we've been able to drastically increase the torsional flex of the binding. The Ultra's Stage 11 ASYM baseplate allows for 360 degree board flex and feel.","rating":"70","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_BASE.jpg?v=1708511842"},"highback":{"active":true,"title":"S15 Ultra Duraflex ST Highback","description":"6 degrees of preloaded forward lean hugs your boot and allows for quick edge to edge response. While the all new molecular highback bushing provides increased freestyle flex and rebound while riding. This unique highback construction is exclusive to Union Binding Company. ","rating":"50","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_HB.jpg?v=1708511843"},"anklestrap":{"active":true,"title":"Forma X Ankle Straps","description":"Instant response meets all day long foot comfort. The Forma X ankle strap's construction combines our responsive Exoframe exterior with the padded comfort and flexibility of the Forma interior. Form fits perfectly to any boot on the market today.","rating":"50","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_ANKLE_STRAP.jpg?v=1708511843"},"toestrap":{"active":true,"title":"TS 5.0 Ultragrip Toe Strap","description":"Multi-Positional options and thermoplastic anti-slip material keep you locked in and on point. The TS 5.0 Ultragrip toe strap is compatible with all boot brands and models.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_TOE_STRAP.jpg?v=1708511843"},"ratchets":{"active":true,"title":"Magnesium S1 Ratchets ","description":"Magnesium S1 ratchets are Union’s answer to the elements. A fully integrated spring protected from the harsh outside provides you with Union’s best ratchet to date. Longer life span and better spring return guaranteed.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_RATCHET.jpg?v=1708511842"},"gaspedal":{"active":true,"title":"Molecular Bushing","description":"Union's Molecular bushing provides spring-loaded take offs and perfectly cushioned landings. 15% lighter than Union Fused Vaporite and guaranteed to minimize foot, ankle and knee fatigue. This is the future of freestyle binding design.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_BUSHING.jpg?v=1708511843"},"frontbaseplatelogo":{"active":true,"title":"TPE Outsole","description":"Exclusive to Union, this 100% new binding manufacturing process requires zero bushing gluing and adds another layer of dampening and vibration canceling material to the all-new Ultra.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_TPE.jpg?v=1708511843"},"flad":{"active":true,"title":"Astro Ankle Washer","description":"Union's Astro ankle washer adds another level of confidence and security to your riding. Prevents heelcup slippage on binding models that only feature a single heelcup screw.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_ULTRA_WOMEN_HOT_PINK_ASTRO_WASHER.jpg?v=1708511843"}}
Union Ultra
exoframe bindings

Stage 11 ASYM Duraflex ST Baseplate

By removing excess material in the toe and heel of the baseplate, and utilizing a brand new asymmetrical shape, we've been able to drastically increase the torsional flex of the binding. The Ultra's Stage 11 ASYM baseplate allows for 360 degree board flex and feel.

Baseplate Flex

Flexy
Rigid
exoframe bindings

S15 Ultra Duraflex ST Highback

6 degrees of preloaded forward lean hugs your boot and allows for quick edge to edge response. While the all new molecular highback bushing provides increased freestyle flex and rebound while riding. This unique highback construction is exclusive to Union Binding Company.

Highback Flex

Flexy
Rigid
exoframe bindings

Forma X Ankle Straps

Instant response meets all day long foot comfort. The Forma X ankle strap's construction combines our responsive Exoframe exterior with the padded comfort and flexibility of the Forma interior. Form fits perfectly to any boot on the market today.

Anklestrap Flex

Flexy
Rigid
exoframe bindings

TS 5.0 Ultragrip Toe Strap

Multi-Positional options and thermoplastic anti-slip material keep you locked in and on point. The TS 5.0 Ultragrip toe strap is compatible with all boot brands and models.

exoframe bindings

Magnesium S1 Ratchets

Magnesium S1 ratchets are Union’s answer to the elements. A fully integrated spring protected from the harsh outside provides you with Union’s best ratchet to date. Longer life span and better spring return guaranteed.

exoframe bindings

Molecular Bushing

Union's Molecular bushing provides spring-loaded take offs and perfectly cushioned landings. 15% lighter than Union Fused Vaporite and guaranteed to minimize foot, ankle and knee fatigue. This is the future of freestyle binding design.

exoframe bindings

TPE Outsole

Exclusive to Union, this 100% new binding manufacturing process requires zero bushing gluing and adds another layer of dampening and vibration canceling material to the all-new Ultra.

exoframe bindings

Astro Ankle Washer

Union's Astro ankle washer adds another level of confidence and security to your riding. Prevents heelcup slippage on binding models that only feature a single heelcup screw.

Specifications

Binding Details

Technology
Baseplate
Stage 11 Duraflex ST
360 degree board flex and feel. The ultimate freestyle riding experience. Lifetime warranty.
Bushing
Moleculer Bushing w/ TPE Outsole
Cushioning + rebound. Zero bushing gluing required.
Heelcup
Extruded 3D Aluminum w/ Astro Washer
Designed for optimum heel hold and minimization of drag. Astro washer prevents heelcup slipage.
Highback
S15 Ultra Duraflex ST
A thin layer of molecular bushing provides increased freestyle flexibility.
Ankle Strap
Forma X
Exoframe exterior with the padded comfort and flexibility of the Forma interior.
Toe Strap
TS 5.0 Ultragrip
Multi-Positional options, thermoplastic anti-slip material and fits to any boot.
Ratchet
Magnesium S1 w/ Steel Base
Union's newest ratchet - Longer life span and better spring return guaranteed.
FLAD
Zero FLAD
No FLAD needed. A thin layer of molecular bushing provides a spring loaded return for quick edge to edge power when you need it.
Hardware
Grade 8.8 Steel
The strongest steel available on the market.
Gas Pedal
Non Stick + Extragrip
Prevents snow and ice build up under boots. Extragrip under the big toe for increased traction.
Strap Adjustment
Tool-Less
No tools needed for adjustment. Simply pop the pins and adjust.
Canting
No
0º
Suggested Board to Binding Flex

Boards and bindings come in a variety of stiffnesses for different types of riding. Every rider has their own preference on how a board and binding should interact. Below is Union's suggestion of board to binding flex.

suggested board bindings suggested board bindings
Soft
Stiff
Disk Type and Compatibility
disk bindings

Ultra Mini Disk

disk bindings

4x2

disk bindings

Channel

Product Video

HP Jet Fusion 3D Printing

Technological Innovations

HP Jet Fusion 3D Printing
Our in-house Multi-Jet Fusion technology allows for fast, rideable prototyping and even short-run production bindings. Design, Test, Ride, Repeat.

Click to Learn More
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Uncertain what you should ride? Let us help.

BINDING FINDER
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Compare features and technical specifications.

BINDING COMPARE
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MEN’S BINDINGS - X-SMALL SMALL MEDIUM LARGE X-LARGE
US Men - * - 5.5 5.5 - 7.5 8 - 10 10.5 - 13 13 - 15
US Women - 4 - 6.5 6.5 - 8.5 9 - 11 - -
US Kids - 3K - 5.5K 5.5K+ - - -
UK - 2 - 4.5 4.5 - 6.5 7 - 9 9.5 - 12 12 - 14
EURO - 34 - 37 37 - 40.5 41 - 43 43.5 - 46 46 - 48
MONDO - 21 - 23.5 23.5 - 25.5 26 - 28 28.5 - 31 31 - 33
WOMEN’S BINDINGS - SMALL MEDIUM LARGE - -
US Men - * - 5.5 5.5 - 7.5 8 - 10 - -
US Women - 4 - 6.5 6.5 - 8.5 9 - 11 - -
US Kids - 3K - 5.5K 5.5K+ - - -
UK - 2 - 4.5 4.5 - 6.5 7 - 9 - -
EURO - 34 - 37 37 - 40.5 41 - 43 - -
MONDO - 21 - 23.5 23.5 - 25.5 26 - 28 - -
KIDS BINDINGS MINI SMALL MEDIUM - - -
US Men - * - 5.5 5.5 - 7.5 - - -
US Women * - 4 4 - 6.5 6.5 - 8.5 - - -
US Kids 11C - 3K 3K - 5.5K 5.5K+ - - -
UK 10K - 2 2 - 4.5 4.5 - 6.5 - - -
EURO 28 - 34 34 - 37 37 - 40.5 - - -
MONDO 17.5 - 21 21 - 23.5 23.5 - 25.5 - - -
CROSSOVER SIZING

MEN'S
 - X-SMALL SMALL MEDIUM LARGE X-LARGE
US Men - - 6 - 8 8.5 - 10.5 11 - 13 14 - 15
UK - - 5 - 7 7.5 - 9.5 10 - 12 13 - 14
EURO - - 38 - 41 41.5 - 43.5 44 - 46 47 - 48
MONDO - - 24 - 26 26.5 - 28.5 29 - 31 32 - 33

STEP ON® bindings are ONLY compatible with STEP ON® boots. Do not use either product with non-STEP ON® boots or non-STEP ON® bindings. Consult the size chart to ensure that you have the correct size binding for your boot size. Pairing incompatible size boots with bindings may lead to malfunction and could compromise your safety. Women’s and Men’s sizing are based on different size standards. Combining men’s and women’s STEP ON® products will result in malfunction and could compromise your safety.

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BINDING FINDER
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01. General Info:

Select
Men
Women
Kids

Find My Size | Based on 's Size Chart arrow icon union

Select
US
EURO
UK
MONDO
Select
*-5.5
5.5-7.5
8-10
10.5-13
13-15
2-4.5
4.5-6.5
7-9
9.5-12
12-14
34-37
37-40.5
41-43
43.5-46
46-48
21-23.5
23.5-25.5
26-28
28.5-31
31-33
4-6.5
6.5-8.5
9-11
2-4.5
4.5-6.5
7-9
34-37
37-40.5
41-43
21-23.5
23.5-25.5
26-28
11C-3K
3K-5.5K
5.5K+
10K-2
2-4.5
4.5-6.5
28-34
34-37
37-40.5
17.5-21
21-23.5
23.5-25.5
YOUR SIZE IS: Mini XS S M L XL

02. Riding Ability:

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union bindings finderunion bindings finderINTERMEDIATE
union bindings finderunion bindings finderADVANCED

03. Riding Style:

FREERIDE
Steep, Deep, Hard Charging
ALL MOUNTAIN / FREESTYLE
Soft and surfy carving
ALL MOUNTAIN
Ride any terrain
STREET / JIBBING
Maximum freestyle flex
ALL MOUNTAIN / FREERIDE
Destroy the resort
CARVING / BOARDERCROSS
Instant edge-to-edge response
FREESTYLE / PARK
Jumps, rails, and pipe
SPLITBOARDING
Climb Up, Ride Down

04. Our Recommendation:

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UNION BINDING CO. 2025/26
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