Breathable Silicone Versus Rubber Bands: Tested men's rings, surprising grip We’ve tested countless men’s rings, but the ThunderFit Silicone Rings with 10mm wide, 2.5mm thick bands have stood out. The multipack design (1-7 sizes) is convenient, but it’s the material blend—silicone exterior with a rubber band core—that surprises us. Our hands stay cool, and we appreciate the snug yet breathable fit. Unlike stiff silicone, the rubber bands prevent sweat buildup without sacrificing strength. The variety is ideal for rotation, and the grip feels second nature after a few wears. It’s a balance we didn’t expect: durability meets comfort. These rings adapt to movement, making them versatile for everyday use or exercise. If you’re torn between silicone and bands, this hybrid design offers the best of both worlds. We’re impressed by the thoughtful engineering.