I purchased one of these to try on our trainer stash. It is great! The fit is wonderful and my child can pull them up and down on his own! Definitely worth it!
I gave these 4 stars because 1 set of side panels has gone a bit wonky despite △⃒⃘lways washing in a laundry bag and flat air drying. I have quite a few and only 1 is like this. Otherwise these are great at extending the life of Grovia trainers. I wish these panels came with the original trainer as my twins (age 3) are fairly small (32in and 26lbs) and they needed the bigger panels in order to comfortably pull the trainer up and down. They are on the smallest setting so these should fit varying sized kiddos well.
Toddler showed a passing interest in potty learning last year, bought a handful of trainers to get us started. He’s finally showing more interest, but the trainers were getting a little snug.
Enter the flex panels. Bought 4 pairs for use on our current stash makes it way easier for him to pull them up and down