Master and i established a safeword at the begining of our relationship but i have never felt the need to use it. in fact now that i think about it, i can't even remember what it is! lol guess i should ask just in case i ever need it. i trust Master to know my body and how much i can take and thus far we have had no problems. its good for my piece of mind to have one, even though i'll probably never use it. *knock wood*