Propa Volume Reducer
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The Propa Volume Reducer is a simple underfoot shim that reduces internal boot volume and tightens overall fit—especially when your boots start to feel loose or less responsive.
It sits directly under your liner or footbed, lifting your foot slightly and taking up excess space inside the shell. This creates a more secure, connected feel, improving both comfort and control without needing to replace liners or boots.
It’s one of the easiest ways to fix a boot that feels too roomy, packed out, or lacking precision, and can even add a small amount of insulation underfoot.
Key Features
• Reduces internal boot volume to improve overall fit precision
• Improves control and responsiveness by minimising excess movement
• Lifts the foot slightly to better engage the shell and liner
• Restores performance in packed-out liners without replacement
• Adds subtle insulation underfoot for warmth
• Works with most ski boots as a universal fit upgrade
• Quick install – place under liner or footbed, trimming with scissors required
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