Matress or Mattress: How To spell?
The word Matress is misspelled against Mattress, a noun meaning "A mass of interwoven brush, poles, etc., to protect a bank from being worn away by currents or waves."
Mattress has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings ma & ress which should not be misspelled with single 'T'
Wrong Spelling:  ma-t-ress  Correct Spelling:  ma-tt-ress 
Explore spell check of Mattress to spell without errors.