Effortlessly blurring the line between cool and laid-back, this combination of a long sleeve shirt and grey jeans will easily become one of your favorites. And if you want to easily up the ante of your ensemble with one item, introduce a pair of grey chelsea boots to the mix. Naturally, it's easier to work through a baking hot day in a easy and breezy look like this one. More refined combinations like this go well with grey hair.