Premium Gokujo Space Mask - 4-Layer Mask Now with 12mm wide ear loops - Regular Size Individually wrapped, sold in packs of 50. Not 150 pieces. *Please be sure to note this.* I buy these at Costco every month for my own use. I'm selling some of them as a little extra. Would anyone like to try them? They will be shipped in simple packaging. The outer box is not included. Please purchase only if you understand this.