Tech Specs & Key Features
- MSRP: $21.99 – $49.99 (depending on thickness/formula)
- Material: FP Infinity Foam (Non-Newtonian Fluid Technology)
- Design: Trim-to-fit with contoured 3D Heel Cup
- Thickness Options:
- Thin: 3mm toe / 5mm heel
- Mid: 5mm toe / 7mm heel
- High: 5mm toe / 10mm heel
- Key Tech: Full-length Super Squish cushioning, grippy anti-slip bottom layer, sweat-proof top sheet
- Claimed Performance: Absorbs up to 90% of impact energy (transferring roughly 3,000–5,000 N of shock vs. 12,000–25,000 N in standard insoles)
- Warranty: 1-Year Minimum Performance Guarantee
Review:
If you’ve been skating for more than a few years, you know that stock insoles in almost every skate shoe on the shelf are nothing more than thin pieces of cardboard covered in cheap foam. They might feel fine for walking around the shop, but the moment you drop into a bowl, jump a set, or land flat, your joints pay the tax.
After breaking my ankle last year, finding serious impact protection was no longer optional—it was mandatory if I wanted to keep riding bowls and staying active without limping for three days afterward. I decided to put the Footprint (FP) Kingfoam Elite Insoles to the test in my primary skate shoes to see if their non-Newtonian technology and deep heel cup could handle real-world abuse.
First Impressions & Fit
Out of the box, the Kingfoam Elite feels different than standard aftermarket insoles. The material is dense yet pliable. FP uses a non-Newtonian foam formulation that stays soft and flexible during normal movement but instantly hardens on high-velocity impact to dissipate shock energy before it reaches your bones.
Trimming them down to match my shoe size was straightforward—just pull your shoe’s stock insoles, overlay them on the Kingfoam Elites, trace, and slice with sharp scissors.
I went with the High (5mm toe / 10mm heel) profile. It provides maximum impact absorption and heel protection without cramming your foot into the top of the toe box or lifting your heel.
Impact Shock Absorption & Ankle Relief
Coming off a severe ankle fracture last year, every harsh landing or sudden foot-plant sends a reminder right up my leg. Stock skate shoe insoles do virtually nothing to dampen heavy landings.
The difference with the Kingfoam Elites was noticeable on the very first session. Dropping into bowls and taking flat landings, the shock absorption is legit. Instead of that sharp, jarring vibration shooting up through my ankle and knee joints, the impact feels heavily muted. The foam absorbs the brunt of the kinetic force before it can aggravate surgical hardware or healing tissue.
Heel Stability & 3D Heel Cup
One feature that sets the Elite apart from standard flat Kingfoam models is the integrated 3D Heel Cup. When returning from an ankle injury, lateral stability is crucial. The deep cup seats your heel securely in the back of the shoe, preventing unwanted sliding or heel roll when carving hard or putting pressure on your back foot. I definitely appreciate the thick heel cup, especially as I’m running out of tricks.
Board Feel & Break-In
Normally, extra protection comes at the expense of board feel. While you won’t get the ultra-thin, direct-deck feel of a paper-thin stock canvas shoe, the trade-off here is minimal. Because the foam molds under body weight and heat during sessioning, board feel remains crisp enough for precise foot placement without feeling sluggish or disconnected. Break-in time was virtually zero—they felt comfortable right out of the gate.
Overall Impressions
If you’re managing previous injuries—like a broken ankle—or simply looking to extend your session times without joint fatigue, the FP Kingfoam Elite Insoles are one of the most effective upgrades you can buy for your skate shoes. They deliver hard-hitting impact protection, keep your heel locked down, and let you ride harder with significantly less recovery time the next morning.
Pros:
- Exceptional Shock Absorption: Heavily reduces impact stress on ankles, knees, and lower back.
- 3D Heel Cup: Excellent rear-foot lock and lateral stability for recovering joints.
- Temperature Stability: Doesn’t turn into a brick in cold weather or turn to mush when warm inside your shoes.
- Durability: Infinity Foam maintains its structure far longer than standard EVA or PU foams, backed by a 1-year performance warranty.
Cons:
- No Heat-Molded Arch Support: If you require rigid, custom arch alignment, you’ll need to step up to FP’s Gamechangers series.
- Volume Consideration: The High (10mm heel) profile may make low-profile cupsole or vulcanized shoes feel tight if not sized properly.