Poly Plantronics Spare 43937-01, Ear Cushion, Intended Headphones, Compatible With Poly - Plantronics DuoSet H141 ¦ Poly - Plantronics M 170, 175 ¦ Poly - Plantronics Polaris P141-U10P. Plantronics foam black ear cushions provide soft, all day comfort when wearing a Plantronics headset. Part # 43937-01 is sold as a pair of ear cushions and simply slides onto the speaker of the headset.