Twist In Foam Earplugs. Like a fingerprint, no two ear canals are alike. Glide's unique multi-curved stem rotates for a custom fit inside each ear canal. With its unique curved stem design, you simply push & twist for Glide to angle its way to find your fit. FEATURES: (1) Unique multi-curved stem rotates for a custom fit. (2) Large handle on curved stem for easy insertion & removal. (3) Cord can be attached at any desired length. (4) Look for the bright green color as a symbol of Moldex quality. (5) 100% PVC-Free®, like all Moldex products & packaging - for a greener alternative. (6) Made in U.S.A. NRR 30