RIPSTOP is a playable word

ripstop Scrabble® Dictionary

noun
pl. ripstops
a fabric woven so that small tears do not spread
93 Playable Words can be made from "RIPSTOP"
   2-Letter Words (12 found)
   3-Letter Words (27 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)