3M 318-1005 Multiple Use Push-Ins Push-to-Fit Polyurethane Foam Corded Earplugs With Vinyl Cord (1 Pair Per Poly Bag, 500 Pair Per Box) (1/BX) Monitors & Calibration Equipment Sqwincher is isotonically formulated so

Sqwincher is isotonically formulated so your body absorbs the hydration it needs quickly and easily

resilient plastic

*Snap on covers that fit tightly

UltraSense EC is an extended cuff

3M 318-1005 Multiple Use Push-Ins Push-to-Fit Polyurethane Foam Corded Earplugs With Vinyl Cord (1 Pair Per Poly Bag, 500 Pair Per Box) (1/BX) Monitors & Calibration Equipment Sqwincher is isotonically formulated so3M E A R Push Ins combine the easy use and benefits of a reusable earplug with the cost and comfort advantages of a disposable earplug. It's all made possible with the innovative, simple to use design and the ultra soft performance of a tip made of patented E A Rform foam, a derivative of the foam developed for NASA for use in their space shuttle seats.