Why not wear a sweatshirt with navy sweatpants? As well as very comfortable, these pieces look nice married together. Introduce a pair of white low top sneakers to the mix for maximum fashion effect. And if we're talking fashion tips for teens, this ensemble is perfect.
White Low Top Sneakers with Sweatshirt Cold Weather Outfits For Men In Their Teens
Combining a sweatshirt with grey chinos is an on-point idea for a relaxed casual but dapper outfit. When not sure about what to wear in the shoe department, go with white low top sneakers. All in all, a never-failing option if we're talking style tips for teenage boys.