#7 on this list
Performance Medium
Sole
The Sole Performance Medium takes the proven heat-moldable chassis of the Sole brand and pairs it with a base constructed from recycled cork. Sourced in part from recycled wine stoppers, the cork chassis gives this insole a unique combination of structural rigidity, natural dampening, and sustainability that stands out in a market dominated by petrochemical plastics. GearJunkie highlighted it as a top-tier performer for trail and athletic applications. Cork is naturally resilient, shock-absorbent, and moisture-resistant, making it a stellar platform for long days on the trail. When heated in an oven or molded through body heat, the cork adjusts to your exact arch height while maintaining its structural density under load. The arch support remains solid, effectively propping up the plantar fascia and reducing foot strain across uneven terrain without feeling like an unyielding slab of plastic. The trade-off lies in the initial stiffness and overall volume. Before molding, the cork can feel exceptionally firm under the midfoot. The medium-volume profile also requires decent overhead room in your footwear, making it better suited to standard hiking shoes, mid-boots, and roomy trail runners rather than snug, low-volume race shoes. **Highlights** * Recycled cork base provides natural shock absorption and eco-friendly construction * Heat-moldable footbed customizes to your precise arch contours * Zero-drop geometry preserves the natural heel-to-toe balance of your shoes * Firm, non-collapsing arch support holds its shape under heavy pack loads * Moisture-wicking, odor-resistant top sheet manages sweat during long hikes **Watch-outs** * Requires baking or an extended wear-in period to reach optimal comfort * May be too stiff out of the box for hikers who prefer soft foam
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#8 on this list
Konnect Performance
Blumaka
The Blumaka Konnect Performance insole is built around an innovative, eco-conscious approach to athletic cushioning. Utilizing up to 85% recycled foam scraps that would otherwise end up in landfills, Blumaka processes discarded materials into a dense, highly resilient matrix. Recommended by reviewers at GearJunkie, it targets trail runners and hikers who want maximum energetic rebound without sacrificing sustainability. On the trail, the Konnect Performance feels remarkably lively. Unlike standard EVA, which tends to bottom out and flatten permanently under repeated pressure, Blumaka’s recycled foam matrix retains its bouncy, shock-absorbing qualities over hundreds of miles. The insole also incorporates an aggressive, high-traction top cover that actively prevents your foot from sliding forward inside your shoe on steep, technical descents—a common cause of blackened toenails. Because the insole focuses primarily on energy return, impact mitigation, and internal grip, it does not feature a hard thermoplastic arch shank. Hikers needing rigid mechanical stability for severe overpronation will find it lacking in structural control. The grippy top sheet can also make sliding your foot into snug shoes a bit more deliberate. **Highlights** * Foam construction made with up to 85% recycled performance materials * Exceptionally high energy rebound that resists packing down over time * Grippy top sheet minimizes foot slippage inside footwear on steep descents * Low-profile design slides cleanly into most running and hiking shoes * Sustainable manufacturing process significantly reduces clean water waste **Watch-outs** * Lacks a rigid plastic arch cap for severe biomechanical correction * High-friction top layer can make slipping into tight socks or shoes slightly grabby
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Specs side by side
| Spec | Performance Medium | Konnect Performance |
|---|---|---|
| Base Material | Recycled cork composite | — |
| Profile Volume | Medium volume | — |
| Customization | Heat-moldable or wear-moldable | — |
| Platform Drop | Zero drop | — |
| Heel Structure | Deep stabilizing cup | — |
| Arch Profile | Firm, adaptive arch support | Low-to-medium flexible contour |
| Core Material | — | Up to 85% recycled performance foam |
| Support Type | — | Flexible dynamic cushioning |
| Top Cover | — | High-friction traction surface |
| Primary Footwear | — | Trail runners and hiking shoes |
| Rigid Shank | — | None |
What our reviewers liked and didn't
Performance Medium
- Recycled cork base provides natural shock absorption without petroleum plastics
- Heat-moldable footbed customizes easily to match individual arch contours
- Rigid midfoot structure resists collapsing under heavy multi-day backpack loads
- Deep heel cup stabilizes the rearfoot to reduce blister-causing heel slip
- Requires oven heating or an extended break-in period to reach optimal comfort
- Medium profile displaces too much volume for snug, low-profile trail runners
- Initial stiffness may feel overly harsh for hikers who prefer soft cushioning
Konnect Performance
- Made with up to 85% recycled athletic foam scraps
- High energy rebound resists packing out over long mileage
- Grippy top sheet prevents foot slippage on steep descents
- Provides plush, non-mushy impact absorption under the forefoot
- Lacks a rigid plastic arch cup for biomechanical correction
- High-friction top cover can grab socks when putting shoes on
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