Hi Rabbi,
What is process if any to make a year-round HotMat (https://www.amazon.com/dp/B01E7SU2CQ?ref_=cm_sw_r_apin_dp_EE70CMKBPNZM3SJT5R6E) ok to use on Pesach? If applicable is it ok to do that process during Chol HaMoed of Pesach? Thank you Rabbi.