Here's a comparison for those who asked :) You can see that the XL size is indeed a big jump. Mouthguards: https://get-remodel.com/pages/santiago

So, I have the R3 XL in my mouth right now. I haven't worn it much as I was waiting for a slight metallic taste it has to go away. I left it in a water with a pinch of baking soda and salt. That got rid of most of it, although it still has a tiny bit. Apparently those are unharmful compounds, so I started today. Anyway, I also learned that I have unusually long arches hahaha So the XL size doesn't dig into my mouth, which most people have reported. For 90% of people coming from R2 Large, just get an R3 Large. Apart from that it feels great. Certainly more stretch than the R2 (both because of size and thickness). I'll probably cut the tongue tab tomorrow and start wearing it at night too. RevivThree link: https://get-remodel.com/products/r3-mouthguard-by-santi

These are my first impressions. After wearing R2 large for months, R3 XL didn't feel big at all, tbh. I'll start wearing it tonight, most likely. Can't wait to progress even faster now :) RevivThree: https://get-remodel.com/products/r3-mouthguard-by-santi

Hi, which reviv should I buy to start? R1,R2 or R3 and what size?? The size between my first molars it’s 30,75 mm aprox

12/11 ¿Cómo vas con tu Reviv? Vic: Creo que bien Vic: No sé si soy yo pero en algunas ocasiones de la nada me da dolores de cabeza cuando me lo pongo" Vic: Te ha pasado algo similar? She's starting to experience headaches when wearing R2, which is one of the main and more common signs of expansion and improving biomechanics. This happens a lot when the soft tissue is "inflating" and the skull is expanding.