![White and Navy Crew-neck T-shirt with Sweatpants Smart Casual Cold Weather Outfits For Men In Their 30s: This combo of a white and navy crew-neck t-shirt and sweatpants is on the off-duty side yet it's also sharp and seriously sharp. A pair of brown suede chelsea boots easily dials up the fashion factor of your ensemble. So if you're in search of outfit ideas on what to wear as you pass the big 3-0, this getup is perfect.](https://cdn.lookastic.com/looks/charcoal-puffer-jacket-white-crew-neck-t-shirt-black-sweatpants-large-44109.jpg)
![Charcoal Puffer Jacket](https://cdn.lookastic.com/charcoal-puffer-jacket-original-10162877.jpg)
![White Crew-neck T-shirt](https://cdn.lookastic.com/white-crew-neck-t-shirt-original-386478.jpg)
![Black Sweatpants](https://cdn.lookastic.com/black-sweatpants-original-4260368.jpg)
![Brown Suede Chelsea Boots](https://cdn.lookastic.com/brown-suede-chelsea-boots-original-1950873.jpg)
This combo of a white and navy crew-neck t-shirt and sweatpants is on the off-duty side yet it's also sharp and seriously sharp. A pair of brown suede chelsea boots easily dials up the fashion factor of your ensemble. So if you're in search of outfit ideas on what to wear as you pass the big 3-0, this getup is perfect.