Payne Killer Hot/Cold Pack in Lunar BlessingsPayne killer flaxseed hot cold packs have many uses for natural healing Use on headaches or backaches. Rest on an angry uterus for relief from lady pains. Wrap around neck to soothe tension after a long day on the job. Place on sore muscles after a wicked work out. Simply heat it up and take it to bed with you. Approx. 5" x 20" Tag reads: Microwave 80 90 seconds with a cup of water or freeze in a plastic baggie for one hour. Rest on sore areas to melt