Covey Sports Ski Boot Shim Insoles for Volume Adjustment - Trimmable

In this review the Covey Sports Ski Boot Shim Insoles are examined as a do-it-yourself fit solution for skiers and snowboarders with packed-out liners. The bottom line: these 1/8' polyester shims are for riders who need to remove excess volume and reduce heel lift without a shop visit, and they deliver a simple, low-cost way to restore snugness and improve control. Installation is straightforward, the material adds a bit of insulation, and the trimmable design lets users cut the insert to match shell length for a tailored feel.

Key Features

• Trimmable Design: Cut each shim with scissors to match your boot shell length and achieve a precise fit that eliminates footbed movement.
• Volume Reducer: The 1/8' thickness reduces excess space in worn liners so the foot sits more securely for better power transfer.
• Easy Installation: These inserts slip between the shell and liner without special tools or professional fitting, making them quick to try on the hill.
• Insulating Material: Non-woven polyester provides targeted warmth where needed and helps maintain temperature regulation in cold conditions.
• Multiple Sizes: Available in Small (10 in), Medium (10.5 in), Large (11.5 in), and X-Large (12 in) to cover a wide range of boot sizes and can be trimmed to fit.

Who It's For

The Covey shims are best for recreational and performance skiers or snowboarders who have liners that are starting to feel loose and want a fast, reversible fix without changing footbeds or visiting a boot fitter. They are ideal for adults and youth because the inserts can be trimmed to match many shell lengths.

Those seeking structural changes to boot flex, full custom footbed support, or medical orthotics should look elsewhere; these shims are a volume-adjustment and insulation solution rather than a replacement for custom footbeds or major shell work.

Pros & Cons

Pros

• Simple to trim and install, letting users quickly dial in a snugger fit at home.
• Thin 1/8' construction improves heel hold and responsiveness without major modification.
• Non-woven polyester adds modest warmth and does not trap moisture like some foams.

Cons

• Not a substitute for a custom footbed or professional shell modifications when foot alignment or support is required.
• Single-sheet thickness limits how much volume change is possible compared with multi-layer stacking options.

Specifications

Brand	Covey Sports
Material	Non-woven polyester
Thickness	1/8' (0.125 in)
Sizes	Small 10 in, Medium 10.5 in, Large 11.5 in, X-Large 12 in
Placement	Between shell and liner under footbed
Origin	Made in USA

Our Verdict

The Covey Sports Ski Boot Shim Insoles are a practical, low-cost way to restore snugness to worn liners and reduce heel lift for better control. They are best for skiers and riders who need a simple volume reducer and light insulation without committing to custom work, offering solid value for a do-it-yourself fit tweak.

Frequently Asked Questions

Can I trim these to fit my particular boot shell?
Yes, each shim is designed to be cut with scissors to match the shell length for a tailored fit.

Will these replace a custom footbed?
No, these shims adjust volume and provide slight insulation but do not offer the support or alignment of a custom footbed.

How much thickness do they add?
Each insert is 1/8' thick, intended to reduce excess space and improve heel hold when liners have packed out.