Review on ⛱️ LAMINET Deluxe Heavy-Duty Chair Seat Protector - Waterproof, Spill-Resistant & Removable - Crystal-Clear Plastic - Adjustable Patented Design - Fits Chair Seats Up to 21″ x 21″ - Set of 4 by Lissette Molina

They are mediocre at best. The included velcro is too small to hold, so the movement of the human body will cause the grip to come off extremely easily. My kids would make them jump off the chairs easily every time we sat down at the table. I even added velcro straps to tighten the fit so they are usable for at least a year. Now the plastic is starting to crack, so I had to find another solution. Hopefully we'll have better luck with the cloth versions, which have elastic straps to attach at the corners and plastic clips that attach under the seat.