Please also take a look at related products! ↓ #panpara Fabric Handmade List is here This is soft elastic that won't hurt your ears. It's a flat elastic of a common to slightly thicker width used for masks. It's stable and doesn't cause pain. The second image shows a comparison from left to right: 7mm flat elastic, 3mm round elastic, and 2mm round elastic. 7mm width x 10m