My favourite tank top for running!

These are expensive but I got mine on sale, which is good because Under Armour's Lux tank tops (with built-in bras) are expensive, their one downside. But they came close to making that up to me by the great quality - their tank tops really hold up in colour and construction through washings.

What I love most about these tank tops when I'm running or working out is that I get the good support of a sports bra but with the modesty of a tank top when it's too warm outside to have to wear layers. The all-in-one is aspect is super convenient, too - I can throw it on in a sec and out I go.

They come in great colours, too.