Roxa Sonic 4 GW Jr Ski Boots 2026
The SKI BOOTSONIC 4 is a junior overlap (2-piece) ski boot built from PP/PP and fitted with a Junior Comfort liner. It uses four aluminum buckles and a 102 mm Biofit last, and is compatible with Alpine and GripWalk soles and binding systems. Available in sizes 22.5-26.5, it provides the key construction and interface details needed for junior alpine setups.
Technical Summary
Architecture
Overlap - 2 piece
Material
PP/PP
Buckles
Liner
Junior Comfort
Sole
Alpine / GripWalk
Binding System
Alpine / GripWalk
Last
102 mm Biofit
Sizes
22.5 - 26.5
| Architecture | Overlap - 2 piece |
|---|---|
| Material | PP/PP |
| Buckles | 4 Alu |
| Liner | Junior Comfort |
| Sole | Alpine / GripWalk |
| Binding System | Alpine / GripWalk |
| Last | 102 mm Biofit |
| Sizes | 22.5 - 26.5 |
- Overlap two-piece shell construction
- Junior Comfort liner
- 4 aluminum buckles
- Alpine and GripWalk sole compatibility
- 102 mm Biofit last
- Size range: 22.5-26.5