Howard Leight by Honeywell Max Lite Uncorded Earplugs Refill saves time and space and the earplugs are made from low pressure polyurethane foam which is perfect for those having smaller ear canals. The contoured T shape facilitates easy handling and the soil resistant closed cell foam skin avoids dirt build-up. It can be used in automotive industry, aviation, forestry, furniture manufacturing, landscaping, metal fabrication and more.