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Every ring holder on Shopee says "strong grip." None of them tell you the actual grip number. Here's what they don't want you to compare. There's a measurement called friction coefficient — it just means how well a material holds onto your skin without you squeezing. Metal ring holders score 0.3. That's low. Your finger has to do almost all the work. That constant micro-gripping you do while scrolling one-handed? That's not you being clumsy. That's what happens when the material barely holds on by itself. Silicone scores 0.9. Same finger. Same test. Three times the grip — and your hand isn't working any harder. The material does the holding for you. But grip is only half the problem. The other half is hardness. Metal is extremely hard — rated 85 to 90 on the Shore hardness scale. Your finger? Only 10 on that same scale. That's a massive gap. Hard material pressing into soft skin at the same spot, over and over. That red mark on your finger after 20 minutes of scrolling? That's not because you're wearing it wrong. That's just what happens when a material is that much harder than your skin. No "ergonomic" shape fixes that — it's the material itself. Silicone sits at 40 on that scale. Much closer to your actual skin. Instead of pressing into one spot, it flexes and spreads the contact across your whole finger. That's why silicone leaves zero marks after an hour when metal already leaves a visible line in under 20 minutes. Two numbers tell the whole story: 0.3 vs 0.9 for grip. 90 vs 40 for hardness. Metal fails both. One week from now, you'll be scrolling on the MRT, one hand on the rail, other hand on your phone — not even thinking about your grip. That's what the right material feels like. We published the full comparison data in our latest research. Link below.