What am I?

First thing today was to try my bike out after it's service. It was fine: the brakes were sharp and the gear change was smooth. I then tried it with my new clip on shoes - which was different. I needed to tighten the shoes up as the cleats weren't tight enough. I'll have to do more practice with them to get use them yet...

I then spent several hours ironing while watching Death in Paradise on DVD. Ironing is not very exciting, but watching something interesting makes it go faster.

TV was dire in the evening and I wasn't motivated to do anything, so it was a bit late when I got round to creating this blip. Any idea what it is? The clues are that it's very common; it's a garment and what is in the blip is a modification...