Reply To: Tallis Katan – wool vs. cotton Home › Forums › Decaffeinated Coffee › Tallis Katan – wool vs. cotton › Reply To: Tallis Katan – wool vs. cotton May 15, 2016 2:50 pm at 2:50 pm #1152065 takahmamashParticipant I use the Neatzit, which is a cotton undershirt with 4 corners.