In-ear headphones from Skullcandy that both fit well and have good sound isolation. They have clever buttons that you can use to quickly skip songs or answer a phone call.
From Argos
Skullcandy Jib+ In-Ear Wireless Headphones - Black
Gadcet
Skullcandy Jib+ In-Ear Wireless Earbuds, 6 Hr Battery, Microphone, Works with iPhone Android and Bluetooth Devices - Black, New (Unsealed)
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