My son (14 months) was peeing through his hybrids within an hour. Adding these boosters got us back on track without leaks.
These work great. I love the hybrid system.
If you’re thinking about getting these, DO IT. My daughter is a heavy wetter and I noticed we were going through so many outfits a day from leaky wet diapers, I was worried I had an absorbency issue. But once we started using these on top of the insert in her hybrid diapers, no more leaks. Seriously! She can sleep all night with on set and she’s good to go. Only regret is not buying more the first time around.