Elastic, 1/4” flat - White, by the yard - Picking Daisies
70-Yards Length 1/4" Width White Braided Elastic Cord/Elastic - Walmart.com
White - 1/4 Shock Cord | Paracord Wholesale
Amazon.com: 1/4 inch Elastic for Sewing 1/4 inch Elastic Bands for Masks Making 1/4 inch 20 yds Knit Elastic for Sewing White Flat Elastic Rope for Masks Adults - 1/4" 20 Yards