A grey check long sleeve shirt and a white crew-neck t-shirt are absolute menswear staples if you're planning an off-duty wardrobe that matches up to the highest style standards. White canvas high top sneakers will add a more relaxed twist to an otherwise standard outfit. And we all know chilly, wintry days call for knockout combinations just like this one. Wondering how to perfect casual looks as you head into your 30s? This combination is a good illustration.