Most dampening out there. How are your knees ankles and/or hips ? Try them in these ! Union's S15 Ultra Duraflex Highback uses a molecular bushing that improves the flex of the binding for a responsive feel as you ride. Every piece of the Ultra acts as a suspension system for your feet. The Ultra helps eliminate vibrations underfoot and cushions your landings, so you can be ultra prepared to send new features and tricks.

Flex Rating – 6.5 (1 Soft - 10 Stiff)

Baseplate - Stage 11 | Asym Duraflex ST – Asymmetrical Baseplate For Increased Torsional Board Flex. All-new Astro Washer Prevents Heelcup Slipping. Made with Duraflex ST Nylon

Molecular Bushing – Increased cushioning for hard landings, 15% lighter than Union Fused Vaporlite, and made to minimise foot fatigue. This is one vibration dampening baseplate!

TPE Outsole – This new binding manufacturing process is ice and snow resistant and requires zero bushing glue.

Highback - Stage 15 | Ultra Duraflex ST – New from Union, this molecular highback has a bushing For increased freestyle flex and comes preloaded for quick edge to edge power. Made of Duraflex ST Nylon

Straps - Forma X Ankle Strap – Exoframe exterior for instant response, padded interior for all day long foot comfort. Exoframe connector acts as a suspension system for your boots.

TS 5.0 Ultragrip Toe Strap

Buckles - Magnesium S1 with Steel Base – Union's proven bombproof ratchet system, Magnesium buckles are light, sleek, and durable on the mountain.

Additional Features - 

Mini Disk – Compatible with 2x4 and The Channel™

Grade 8.8 Hardware – The strongest steel available on the market, Union's use of Grade 8.8 represents a commitment to delivering the strongest and most reliable bindings on the market today.

Extruded 3D Aluminium Heel Cup with Astro Washer

Specs

• Ability Level:
  Intermediate-Advanced

• Flex Rating:
  Medium
• Binding Mount Pattern:
  2x4, Channel
• Warranty:
  Limited Lifetime (Baseplates & Heelcups), 1 Year (All Other Parts)