Whether you’re jetting off for business or going on a trip with your girlfriend, you should know how to pack your carry-on, your backpack, and all your luggage. Sorry, man—that means no more just throwing all your tees and grooming products into your bag and calling it good. Start your trip off on the right foot with a perfectly packed bag (at least, until security gets their hands on it) with these eight tips from guys who do it on the regular.

Less is best

If you think you packed too much, you're probably right. Andrew Mellen, author of Unstuff Your Life! Kick the Clutter Habit and Completely Organize Your Life for Good, finds himself in the air at least once a month for speaking engagements or other work events. The biggest mistake he sees other travelers making: packing too much. “One really well-tailored suit is all you need if you have nice shirts,” says Mellen. For more casual trips, take a single pair of jeans and shorts.

Roll, don’t fold

Save space and reduce wrinkles by rolling instead of folding clothes. “I even roll up dress trousers because they’ll be less likely to wrinkle,” Mellen says. “I roll all of my T-shirts, jeans, shorts, bathing suits, and gym clothes.” Save yourself time on your trip by packing outfits together, too: Group your T-shirt, underwear and shorts on top of each other and roll them for easy access in the mornings.

Use that extra square footage

Roll your belts and stuff them—along with spare socks— in your shoes to maintain their shape and cut down on wasted storage opportunities. “[It] provides the same function as a shoe tree with something I’m already taking with me,” Mellen says.

Skip the travel-sized bottles

Pouring your body wash or beard lube into travel sized jars doesn't just suck, it's downright inefficient. “Go to any department store or BlueMercury and ask for samples of your favorite grooming products (face wash, shampoo, shaving cream),” says Arash Shirazi, the president of Bullitt Agency, who racks up about 200,000 miles of travel a year. “You can just throw them in your luggage and discard them after use. Plus they don’t leak.”

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Mind your shoes

Mellen keeps the shoe bags that come with his shoes, and uses them every time he travels. If your shoes didn’t come with bags, wrapping a plastic shower cap around the soles keeps them from transferring dirt onto your clothes in transit.

Plan for smelly workout gear

Working up a sweat while traveling is one of the best things you can do (see for yourself with this Total-Body Anywhere Workout), especially if you’re in a new time zone. But packing sweat-soaked gym clothes back into your suitcase is a recipe for stink. Instead, “I’ll take old T-shirts and wear them to work out and then discard them after use. It frees up your luggage to make room for gifts,” Shirazi says. He also recommends using a scented dryer sheet in your gym shoes and clothes to keep everything smelling fresh. If you plan to bring your gym kit back with you, try some water-resistant and breathable Aloha bags.

Check your weather app at the right time

Mellen suggests packing the day before you leave so that you have an accurate weather forecast for your destination. He also travels with a carry-on backpack that has an easily accessible zipped pocket where he keeps winter essentials like a hat, gloves, and a lightweight down jacket in reach. Not sure which jacket to throw in your pack? Opt for versatility. “A leather jacket can take a lot of abuse on the road and cover wrinkled clothing,” says Shirazi, who still travels with a leather jacket he bought ten years ago.

Pack your suit right

Linen suits are a popular summer option for weddings and work alike for a good reason, but be warned: They wrinkle like crazy. To keep any suit jacket pressed without having to bring a garment bag, use this folding method.

(Cool, you have your packing gameplan down. Now buy yourself a high-quality travel bag.)