Compatible Models: These are superior gel cushions that they could use on a wide variety variety of 3M series headsets + X1A-X5A + Tactical 100/300/500 + ZOHAN EM042/033 + PROHEAR 037/033 + Rangeguard, Shotgunner II, ComTac, ProTac, Sound Trap, Swat Tac, Tactical 6-S, TacticalPro headsets.( Note: BUT THEY DON'T FIT Optime 105 Earmuffs H10A ) Superior Gel Cushions: Designed for durability, the upgraded gel ear cushions feature an ultra-thin polyurethane layer that ensures a soft, skin-friendly touch. Unlike faux leather or vinyl pads that wear out quickly, our gel ear pads are built to last for years, even with regular use. Say goodbye to frequent replacements and hello to long-lasting comfort. Easy & Quick Installation: Upgrading your earmuffs has never been easier! Simply remove the original ear pads along with the plastic base, then snap the PROHEAR gel ear pads into place. Press down on the edges of the plastic base to secure them firmly. Our step-by-step visuals make installation a breeze, so you can enjoy your upgraded earmuffs in no time. Stay Fresh & Stay Clean: The 3M WorkTunes gel ear cushions are not only anti-sweat but also easy to maintain. Clean the outer surface with soapy water whenever needed. Just remember not to submerge them, as the pinhole-sized air vent on the side ensures optimal functionality. Keep your ear pads fresh and ready for every use! Package & Attention: Besides 1 pair of headphone earpads, you will get a plastic stick, making the entire installation easy and fast. We upgraded the ABS bottom of the ear cups to ensure a snug fit for your headphones. While installation might require a bit of patience, the result is a secure, comfortable fit that enhances your listening experience. The earpads with white bottom shell. Strong and tough quality keeps your headset alive for another few years.