This relaxed casual pairing of a white and red horizontal striped crew-neck t-shirt and navy jeans is very easy to pull together in next to no time, helping you look dapper and ready for anything without spending a ton of time combing through your wardrobe. The whole ensemble comes together if you enter a pair of black and white canvas low top sneakers into the equation. Wondering how to nail casual outfits as you go through your 20s? This pairing is a practical example.