Shearling Boot Insoles: Warmth, Fit, and Care Tips
By Diemme Footwear - Official Online Store | Published: 2026-10-18
Category: Tips & Care
Learn how shearling insoles add warmth to boots, how to choose the right size, and how to care for them to extend their life.
Quick answer
Shearling insoles are a simple way to add warmth to boots, but getting the fit right and caring for the wool properly makes all the difference. Here’s how to install, fit, and maintain them so they last.
Why shearling insoles work for winter boots
Shearling is wool that is still attached to the leather, which gives it natural insulating properties. When you place a shearling insole inside your boot, it traps warm air between your foot and the cold sole, keeping your feet warmer in freezing temperatures.
Unlike synthetic insoles, shearling also wicks moisture away from your skin, so your feet stay dry and comfortable even during long walks. This makes them a practical upgrade for hiking boots or everyday winter footwear.
How to choose the right shearling insole
Shearling insoles are usually available in different sizes, so it's important to select the size that matches your boot size. If you're between sizes, consider sizing up and trimming the insole to fit, as shearling can be cut to shape.
The thickness of the insole can affect the fit of your boots. If your boots are already snug, a thick shearling insole might make them too tight. In that case, you may need to size up in your boots or choose a thinner insole.
How to add warmth to boots with shearling insoles
- Remove the existing insole: Take out the current insole from your boots to create space for the shearling insole. If the insole is glued in, carefully peel it out, but avoid damaging the boot's interior. Check that the boot interior is clean and dry before inserting the new insole.
- Check the fit: Place the shearling insole inside the boot and slide your foot in. Your toes should not feel cramped, and your heel should sit comfortably. If the insole is too large, trace your foot on the insole and trim it with scissors to match the boot's shape. Remember that the insole will compress slightly with wear, so a snug fit initially is fine.
- Break them in gradually: Wear the boots with the new insoles for short periods at home before heading out for a full day. This lets the wool mold to your foot and helps you notice any pressure points early. If you feel excessive tightness, consider a thinner insole or larger boots.
- Care for the shearling: To keep the wool clean, brush it gently with a soft brush to remove dirt and dust. If the insoles get wet, let them air dry naturally away from direct heat. For deeper cleaning, use a wool-safe cleaner and avoid soaking the leather backing. Never machine wash or tumble dry shearling insoles, as this can ruin the wool and leather.
Product facts
- Shearling Insoles Curly Black: Our Black Lamb Shearling Insoles provide the perfect warmth and comfort for your Diemme sneakers or hiker boots during the winter, made from high-quality lamb shearling from New Zealand. The black color suits darker boots and the natural wool provides breathable insulation for cold-weather wear.
Shearling Insoles Curly Black - Shearling Insoles Curly Natural: Our Natural Lamb Shearling Insoles provide the perfect warmth and comfort for your Diemme sneakers or hiker boots during the winter, made from high-quality lamb shearling from New Zealand. The natural undyed wool offers a classic look and the same cozy warmth, ideal for lighter-colored boots.
Shearling Insoles Curly Natural
