This combination of a white crew-neck t-shirt and olive chinos looks awesome and makes any guy look instantly cooler. The whole look comes together when you add a pair of slip-on sneakers to the mix. So as you can see, it's very easy to look stylish and stay comfy come cooler days, all thanks to getups like this. Think gentlemen in their 50s can't pull off cool casual looks? This pairing will prove you wrong.