Ive worn mine almost daily for the past two years. No decernible widening, though it is perhaps more sturdy, being thicker, than the viper. I take it off daily. It doesn’t feel like the coil is super resistant to being manipulated, but it retains its shape once it’s on. This is the discontinued serpenti tubogas. I wouldn’t recommend wearing any of these 24/7 bc of wear and tear from sleeping or showering, but JMO. Pic from this am.
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ETA: I do have the semi pave viper ring, and there is no change. It seems particularly resistant to stretch, stronger than the tubogas, although that might be the nature of a ring versus bracelet (even though I’ve tried to pull it apart a bit — i prefer a looser fit in the summer lol)
You might want to ask your SA if you can try a new viper bracelet to compare resistance…. Regardless, I would rather tighten it now rather than wait.