Good day

A few months ago I bought a pair of Trevolution children's rain pants at Migros Sport xx. Unfortunately I no longer have the receipt but I know that they weren't cheap.
In the last few days we have used the rain pants a lot, but unfortunately my daughter was wet down to her underwear because she went on the slide with the rain pants.
Can I send the rain pants back for inspection?
Thank you very much for your feedback