I compared the reviews among several headphones, and decided to go with this. Luckily it was a good choice. It is very easy to pair. The finish of the headphones is extremely smooth, and is resistant to sweats. Perfect for jogging. The sound is clear. In the package, it has different sizes of the spare ones. For me, the default one works all right. Plan to get another one for my hubby.
https://www.amazon.co.uk/Headphones-Earbuds-IPX7-Waterproof-Cancelling-Smartphones/dp/B075FHF3WN/ref=sr_1_2?ie=UTF8&qid=1508606446&sr=8-2&keywords=homtssaw