This is the 14272nd most frequent Polish word.
prostszego
The word "prostszego" is the genitive or accusative singular form (neuter) and the genitive singular form (masculine personal) of the comparative of "prosty," meaning "simpler" or "of simpler" in English.
Here, "prostszego" describes the fabric quality in a specific functional context.
To ubranie jest z materiału prostszego w praniu.
This clothing is made of fabric that is simpler to wash.
The word "prostszego" is used in a comparative context, showing the relative simplicity of the task compared to others.
Nie ma nic prostszego niż to zadanie.
There is nothing simpler than this task.
In this sentence, "prostszego" is used as an adjective in comparative form to modify "rozwiązania" (solution).