In-ear headphones from HP that both fit well and have good sound isolation. They are easily connected with a cord.
From Amazon
HP Stereo Headset 150 In-Ear 3, 5mm Black
Clove Technology
HP Earbuds Black Headset 150
OnBuy
HP Earbuds Black Headset 150
Athema Services
hp black doha inear headset 150 **new retail** x7b04aa#abb - eet01