What is the red circle with the circle arrow on jelly splash when you get a treasure chest??

Asiacmg

When I win a treasure chest I get boosters and lives but I've gotten a red circle that looks like a return symbol of some kind but I can't find it after they give it to me and I don't know what it does. 

KingsPinn

It's not the unlimited lives is it? The heart with the infinite sign in the middle? 

If not, post up a screenshot, I'm curious to see which booster you are referring to.