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Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Union Trilogy
Model Information

Union Trilogy

Women's Snowboard Binding

$649.99
$649.99
Sold out
Tax included. Shipping calculated at checkout.
Black White Light Blue Rose
S M L
Size Chart
Only 3 left Only 3 left Only 3 left Only 2 left Only 1 left Only 0 left Only 0 left Only 3 left Only 0 left Only 0 left Only 0 left Only 0 left
Find My Size | Based on Women's Size Chartarrow 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
7C-11C
11C-3K
3K-5.5K
5.5K+
6-10
10K-2
2-4.5
4.5-6.5
24-28
28-34
34-37
37-40.5
13.5-17.5
17.5-21
21-23.5
23.5-25.5
YOUR SIZE IS: One Mini XS S M L XL
Must select color and size.
Main Information

Union Trilogy

Built for the next generation—and trusted by the last—the 2026 Union Trilogy sets the standard for all-mountain performance. With a smooth, responsive ride feel and all-day comfort, it’s the go-to binding for women who ride everything, everywhere. From groomers to powder to park laps, the Trilogy handles it all. No wonder more women choose the Trilogy than any other snowboard binding on the market. Ride like the best—ride Union Trilogy.

warranty union
THE UNION WARRANTY
Lifetime for baseplate / heelcup,
2 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

7/10

Soft
Stiff
Snowboarder: Mia Brookes
Filmer: Kevin Nolan
Specifications

Key Features

{"baseplate":{"active":true,"title":"S9 Duraflex ST Baseplate","description":"Built with a purpose. The Trilogy's Stage 9 Duraflex ST Baseplate offers Union’s highest levels of strength and energy transmission to date. Backed by Union’s lifetime warranty guarantee.","rating":"70","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN25_TRILOGY_base.jpg?v=1745912956"},"highback":{"active":true,"title":"S19 Duraflex ST Highback","description":"Layered highback construction allows riders to achieve stronger edge to edge response while still maintaining tortional flexibility for a comfortable ride.","rating":"70","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN25_TRILOGY_hb.jpg?v=1745912956"},"anklestrap":{"active":true,"title":"ExoFrame 6.0 Ankle Strap","description":"Padded comfort meets instant response. The Exoframe 6.0 Ankle Strap features Molecular padding all the way over the edge of the plastic Exoframe strap body. This innovative design helps to minimize foot and ankle fatigue by reducing pressure points.","rating":"70","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN25_TRILOGY_ankle_strap.jpg?v=1745912956"},"toestrap":{"active":true,"title":"TS 5.0 Toe Strap","description":"The TS 5.0 Toe Strap easily shapes to any snowboard boot and offers maximum grip from all angles.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN25_TRILOGY_toe_strap.jpg?v=1745912956"},"ratchets":{"active":true,"title":"Magnesium S2 Ratchets w\/ Steel Base","description":"Magnesium S2 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\/UN25_TRILOGY_ratchet.jpg?v=1745912956"},"gaspedal":{"active":true,"title":"Non-Stick HP EVA","description":"The next evolution of Union’s non-stick EVA technology. Non-Stick Hot Press EVA creates a closed cell finish that’s 100% waterproof. Gone are the days of snow and ice build up on your bindings.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN25_TRILOGY_gaspedal.jpg?v=1745912956"},"frontbaseplatelogo":{"active":true,"title":"Molecular Bushing System","description":"Union’s Molecular Bushing Suspension System acts as an additional layer of dampening and shock absorption between you and your snowboard. Your knees and feet will thank you.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN25_TRILOGY_bushing.jpg?v=1745912955"},"flad":{"active":false,"title":"Non-Stick HP EVA","description":"The next evolution of Union’s non-stick EVA technology. Non-Stick Hot Press EVA creates a closed cell finish that’s 100% waterproof. Gone are the days of snow and ice build up on your bindings.","rating":"","img":"https:\/\/cdn.shopify.com\/s\/files\/1\/0296\/3764\/0285\/files\/UN24_TRILOGY_HB_EVA.jpg?v=1708509853"}}
Union Trilogy
exoframe bindings

S9 Duraflex ST Baseplate

Built with a purpose. The Trilogy's Stage 9 Duraflex ST Baseplate offers Union’s highest levels of strength and energy transmission to date. Backed by Union’s lifetime warranty guarantee.

Baseplate Flex

Flexy
Rigid
exoframe bindings

S19 Duraflex ST Highback

Layered highback construction allows riders to achieve stronger edge to edge response while still maintaining tortional flexibility for a comfortable ride.

Highback Flex

Flexy
Rigid
exoframe bindings

ExoFrame 6.0 Ankle Strap

Padded comfort meets instant response. The Exoframe 6.0 Ankle Strap features Molecular padding all the way over the edge of the plastic Exoframe strap body. This innovative design helps to minimize foot and ankle fatigue by reducing pressure points.

Anklestrap Flex

Flexy
Rigid
exoframe bindings

TS 5.0 Toe Strap

The TS 5.0 Toe Strap easily shapes to any snowboard boot and offers maximum grip from all angles.

exoframe bindings

Magnesium S2 Ratchets w/ Steel Base

Magnesium S2 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

Non-Stick HP EVA

The next evolution of Union’s non-stick EVA technology. Non-Stick Hot Press EVA creates a closed cell finish that’s 100% waterproof. Gone are the days of snow and ice build up on your bindings.

exoframe bindings

Molecular Bushing System

Union’s Molecular Bushing Suspension System acts as an additional layer of dampening and shock absorption between you and your snowboard. Your knees and feet will thank you.

exoframe bindings

Non-Stick HP EVA

The next evolution of Union’s non-stick EVA technology. Non-Stick Hot Press EVA creates a closed cell finish that’s 100% waterproof. Gone are the days of snow and ice build up on your bindings.

Specifications

Binding Details

Technology
Baseplate
S9 Duraflex ST
Union’s highest levels of strength and energy transmission to date. Backed by Union’s lifetime warranty guarantee.
Bushing
Molecular Bushing Suspension System
Acts as an additional layer of dampening and shock absorption between you and your snowboard.
Heelcup
Extruded 3D Aluminum
Designed for optimum heel hold and minimization of drag. Lifetime warranty.
Highback
S19 Duraflex ST w/ Non-Stick HP EVA
Layered highback construction for the perfect balance of flex and response.
Ankle Strap
Exoframe 6.0 w/ Molecular Padding
Padded comfort meets instant response.
Toe Strap
TS 5.0 Forcegrip
Multi-Positional options, thermoplastic anti-slip material and fits to any boot.
Ratchet
Magnesium S2 w/ Steel Base
Fast in, fast out - Union magnesium ratchets are four times the strength of aluminum with only half the weight.
FLAD
Tool-Less
Quickly adjust your forward lean angle to suit the terrain in front of you.
Hardware
Grade 8.8 Steel w/ Astro Washer Ankle
The strongest steel available on the market.
Strap Adjustment
NEW Tool-Less 3.0
No tools needed for adjustment. Simply flip open the tool-less adjuster, unscrew and adjust.
Canting
Yes
3º of canting helps to align legs and knees for a more comfortable ride.
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

Camber Disk

disk bindings

4x4

disk bindings

4x2

disk bindings

Channel

Product Video

Lifetime Warranty

The Union Guarantee

Lifetime Warranty
Every Union binding is built with the highest-quality Duraflex nylon, engineered for superior strength, durability, and consistent performance in all conditions. The result? Unmatched reliability and the confidence of a lifetime warranty on all baseplates and heelcups.

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BINDING FINDER
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Compare features and technical specifications.

BINDING COMPARE
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MEN’S/UNISEX - - - SMALL MEDIUM LARGE X-LARGE
US Men - - - 5.5 - 7.5 8 - 10 10.5 - 13 13 - 15
US Women - - - 6.5 - 8.5 9 - 11 - -
US Kids - - - 5.5K+ - - -
UK - - - 4.5 - 6.5 7 - 9 9.5 - 12 12 - 14
EURO - - - 37 - 40.5 41 - 43 43.5 - 46 46 - 48
MONDO - - - 23.5 - 25.5 26 - 28 28.5 - 31 31 - 33
WOMEN’S - - 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 ONE MINI SMALL MEDIUM - - -
US Men - - * - 5.5 5.5 - 7.5 - - -
US Women - * - 4 4 - 6.5 6.5 - 8.5 - - -
US Kids 7C - 11C 11C - 3K 3K - 5.5K 5.5K+ - - -
UK 6 - 10 10K - 2 2 - 4.5 4.5 - 6.5 - - -
EURO 24 - 28 28 - 34 34 - 37 37 - 40.5 - - -
MONDO 13.5 - 17.5 17.5 - 21 21 - 23.5 23.5 - 25.5 - - -
MEN'S
 - - - SMALL MEDIUM LARGE X-LARGE
US Men's Boot Size - - - 6 - 8 8.5 - 10.5 11 - 13 14 - 15
UK Boot Size - - - 5 - 7 7.5 - 9.5 10 - 12 13 - 14
CM Boot Size - - - 24 - 26 26.5 - 28.5 29 - 31 32 - 33
EU Boot Size - - - 38 - 41 41.5 - 43.5 44 - 46 47 - 48
Mondo Boot Size - - - 240 - 260 265 - 285 290 - 310 320 - 330
WOMEN'S
 - - - SMALL MEDIUM LARGE -
US Women's Boot Size - - - 5 - 6 6.5 - 8.5 9 - 11 -
UK Boot Size - - - 3 - 4 4.5 - 6.5 7 - 9 -
CM Boot Size - - - 22 - 23 23.5 - 25.5 26 - 28 -
EU Boot Size - - - 35 - 36.5 37 - 40.5 41 - 43 -
Mondo Boot Size - - - 220 - 230 235 - 255 260 - 280 -

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 Chartarrow 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
7C-11C
11C-3K
3K-5.5K
5.5K+
6-10
10K-2
2-4.5
4.5-6.5
24-28
28-34
34-37
37-40.5
13.5-17.5
17.5-21
21-23.5
23.5-25.5
YOUR SIZE IS: One 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:

union loader
UNION BINDING CO. 2026/27
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