MAX-1-D MAX LS500 DISP REFILLUOM: PK 500 Description: PREMIUM FOAM EARPLUGHoward Lite Max Refill for use with LS 500 dispenser.* SNR 37* Bell shape gives maximum in ear comfort, easier to insert and resists tendency to back out of ear canal* Polyurethane foam enhances comfort for long term wear* Smooth, soil resistant closed cell foam skin prevents dirt build up* Conforms to EN352 2