Rose Anvil Egg Test Insoles: Why a Cold Egg Drop Doesn't Show ​Real Shock Absorption
A viral video testing Rose Anvil egg test insoles with a cinder block and a raw egg has a lot of skaters second guessing their insole choice but the test is fundamentally flawed and it’s misleading you if you take it at face value. It’s an entertaining watch but a single cold, room temperature drop test tells you almost nothing about how shock absorbing foam actually performs once it’s inside a shoe, on a real foot during a real session. Before you let the Rose Anvil egg test insoles result change your buying decision, here’s the full picture the video left out and why the results don’t hold up once you look at real lab data.
What the Rose Anvil Egg Test Actually Measured
Rose Anvil’s video placed several insoles under a cinder block with an egg on top, then dropped weight to see which insole kept the egg intact. This is the setup behind the now-viral Rose Anvil egg test insoles clip and it’s worth being clear about what it actually is: Rose Anvil is a leathercraft and boot repair channel not a materials testing lab, and this test wasn’t built with any real understanding of how performance impact foam works. That’s not a minor detail it’s the reason the results are misleading. The test setup (a single unworn insole dropped once at ambient room temperature) doesn’t reflect the conditions performance foam is actually engineered for, and presenting it as a definitive verdict on shock absorption is simply inaccurate.
Why Temperature-Activated Foam Behaves Differently at Rest
Many high performance impact foams, including the non-Newtonian material used in FP’s Gamechangers Pro and FluidX insoles are rate and temperature sensitive by design. Straight out of the package at room temperature they can feel firmer than they perform in actual use. Once inside a shoe where in-shoe temperature typically runs 98–105°F from body heat plus a few minutes of walking or skating, the foam activates and softens into its intended working range.
A cold, unworn, single-drop Rose Anvil egg test insoles video tests the material at exactly the state it isn’t designed to perform in and any test run this way is going to give you a false picture no matter which insole is on the table. It’s the insole equivalent of judging a wetsuit’s warmth while it’s still dry on the shelf then telling people it doesn’t keep you warm.
Lab Data vs. a Single Room-Temperature Drop ​
Instead of a cinder block and an egg independent lab testing uses a calibrated striker, controlled impact energy and a force plate that measures kilonewtons (kN) of transmitted force the same core method used in protective equipment testing. This is exactly the kind of data missing from the Rose Anvil egg test insoles video and it’s the only way to actually know how an insole performs under real impact. FP sent samples to Intertek for this kind of testing, published on the Skateboarding Insoles Lab Tests page:
- FP Insoles transmitted roughly 11.7–11.8 kN under controlled heel-impact testing.
- A competing insole transmitted 24.5 kN under the same conditions more than double.
- Running generates around 2–4 kN on average, while jumping in place can generate up to 13 kN which puts that gap in real world context.
- Four month old worn FP Insoles still outperformed a brand-new competitor pair showing the material holds its performance after repeated impact rather than degrading.
You can see this kind of real-impact comparison here: force transferred into the body test and temperature performance comparison.
Why the Testing Standard Matters as Much as the Number
Not all shock absorption claims are measured under the same conditions. Many ASTM tests built for running footwear run at ambient room temperature, which doesn’t reflect an actual skate or snowboard session. Standards built for high-force, sustained-impact protective gear like EN 1621Â originally developed for motorcyclists’ limb and back protectors specifically test at elevated and low temperatures, because materials behave differently once they’re activated. A product can look fine in a room-temperature test like the Rose Anvil egg test insoles comparison and still underperform once it’s actually hot and in use.
What the Rose Anvil Egg Test Actually Measured
The Rose Anvil egg test insoles clip isn’t wrong about what happened in that one drop the egg broke or it didn’t. What it can’t tell you is how that same insole performs after it’s warmed up, broken in, and taken hundreds of real impacts. That’s the gap independent lab testing is built to fill.
What to Check Before Trusting an Insole "Test" Video
- Was the insole tested at rest or after activation?
Temperature-sensitive foam needs a few minutes of wear to reach its working range. - Is there independent lab data behind the claim?
Look for kN transmitted-force numbers, not just a pass/fail visual. - Was the tester a materials lab or a lifestyle channel?
Entertaining content and calibrated testing aren’t the same thing. - Does the test account for repeated use?
A worn insole should hold up close to new performance, not degrade sharply. - What standard was used?
Room-temperature ASTM running tests and temperature-inclusive standards like EN 1621 can produce very different pictures of the same product.
Frequently Asked Questions (FAQ)
Is the Rose Anvil egg test insoles video accurate?
It accurately shows what happened in that single test, but the conditions — cold, unworn, one drop — don’t reflect how temperature-activated shock absorbing foam performs during actual wear.
Why do some insoles feel stiff right out of the box?
Many performance foams are engineered to firm up on impact but stay pliable during normal wear, and they need body heat and a short break-in period to reach that intended balance.
What’s a more reliable way to compare insole shock absorption?
Independent lab testing that measures kilonewtons (kN) of transmitted force, ideally at realistic in-shoe temperatures, rather than a single informal drop test.
Conclusion
The Rose Anvil egg test insoles video makes for good entertainment, but it isn’t credible as a shock-absorption test, and it shouldn’t be treated as one. If you’re choosing insoles based on real protection, don’t trust a cold egg drop trust independently verified kN data, confirm whether temperature was factored in, and see how the insole performs after real wear. Start with FP’s Gamechangers or Kingfoam Elite line, and review the full lab test results for yourself before you decide.
External Reference & Scientific Citation
To learn more about standard non-Newtonian fluid dynamics, energy conversion principles and polymer material behavior under explosive high-velocity impact drops, consult the American Physical Society Materials Physics Documentation. (High authority industry resource validating molecular dampening sciences