3M™ E-A-R™ Push-Ins™ With Grip Rings Corded Earplugs (Box of 200)3M E A R Push Ins with Grip Rings Corded Earplugs, Poly Bag, 200 per Pack (10 Packs per Carton) Push Ins earplugs with proprietary Grip Rings gently seal the ear canal to enhance fit. The flexible stem makes insertion and removal easy and helps keep the tips clean when the wearers hands are dirty. Foam tips made of soft polyurethane foam. 3M E A R Push Ins Earplugs feature a push to fit design with a flexible stem to help keep the soft foam tip clean,