| Union's Forma Pro Liner is 100% memory foam, custom-fitting for all-day support and lasting performance. |
| Union's Single Frame Shell™ streamlines boot construction with lightweight, durable Pebax for reactive flex and long-lasting performance. |
| Contact 3D Dual Density Ortholite™ footbeds provide lasting comfort, performance, and fit, with minimal compression and 5% recycled rubber. |
| Union's Rebound Bushing System™ adds lightweight cushioning under heels and toes to reduce vibrations, absorb impacts, and maintain performance over time. |
| Phylon EVA midsole delivers lightweight, responsive cushioning for all-day comfort and performance. |
| Union X-Grip Outsoles use high-performance natural rubber for superior grip, minimal thickness, and enhanced board feel. |
| Union's React Tapered 3D Tongue offers geometric shaping for comfort and extra toe-box room. |
| HF Premium Synthetics feature durable, wear-resistant construction, locally sourced in Italy. |
| EPDM Ankle Pockets use cushioned memory foam for a locked-in heel and added support. |
| Mesh Liner provides moisture-wicking comfort to keep feet dry. |
| Heat Reflective Foil underfoot enhances warmth and retains heat. |
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| Short Length Description: |
| Dual Zone BOA® provides two micro-adjustable zones—upper for flex and stability, lower for response and control. |
| The Dual-Dial H4 BOA® Fit System delivers durability, micro-adjustable precision, and quick release. |
| The BOA® TX3 lace is flexible, low-friction, and built for strength and precise performance. |
