Men's Halloween Costumes

At SillySanta you'll find over 10 mens halloween costumes – also known as men's Halloween outfits or fancy dress – ready for the big night. Going as a group or just want one standout look? From a sneaky Men's Prisoner Onesie to a cheeky Men's Devil Onesie, there's a costume for every kind of guy right here in our collection, rated 4.8 out of 5 from over 295 reviews.

No-fuss mens halloween costumes you can throw on in seconds

Every costume in this collection is a one-piece onesie, which is the whole point. There's no rummaging for separate pants, no pinning bits together, no half-finished look that falls apart by 9pm. You step in, zip up, and you're done.

Throw it straight over a t-shirt and jeans and walk out the door. That makes these the easiest mens halloween costumes to wear if you'd rather spend the night enjoying the party than fighting with a fiddly outfit.

The roomy one-piece cut means you can sit, dance and move without anything riding up or coming loose. It's a costume that does the work for you.

Mens halloween costumes for every taste: scary, funny and in between

Variety is the easy part here. Want to spook people? Go for the skeleton, the monster or the devil. Want a laugh instead? The unicorn, the alien and the teddy bear pull plenty of grins at the door.

A few favorites worth a look:

• Men's Prisoner Onesie: comes with a writable mugshot board, so you can scrawl your own charges before you head out.
• Men's Devil Onesie: the classic Halloween pick when you want a bit of menace without a mask.
• Men's Alien Onesie: properly out-there, and one of the styles that glows in the dark.
• Men's Monster Onesie: goofy and a little gruesome, the best of both worlds.
• Men's Brown and Grey Teddy Bear Onesies: soft, comfy and the easy crowd-pleaser.

Because the styles share colors and themes, it's easy to mix and match with your buddies so the whole crew turns up coordinated. If you want to pull a wider group or the family into it, browse the full halloween costumes hub and pick matching looks from there.

Comfort and fabric that actually feels good all night

These are built to be worn for hours, not just photographed once. The fabric is super soft and has a bit of stretch, so you're not stuck in something stiff while everyone else is having fun.

The teddy styles use a stretchy teddy fleece that's genuinely cozy, and several of the spookier picks glow in the dark, which lands well once the lights go down at a party. Composition varies depending on the style: some are 100% polyester, some 100% recycled polyester, and some a 60% cotton, 40% polyester mix. Whichever you choose, the feel is soft and easy to live in.

Fit is regular, so choose the size you'd normally wear. If you're between two sizes, size up for a roomier, comfier hang. Our models are roughly 177 to 189 cm wearing sizes S to L, which gives a taller build a decent reference point.

Occasions these costumes were made for

The beauty of a throw-on onesie is that it suits almost any kind of Halloween night.

• Office party: keep it light with a teddy, unicorn or alien rather than something that scares the new hire.
• Night out with the crew: go bolder with the skeleton, devil or monster and own the bar.
• Lounging at home: these are comfy enough to wear on the couch with a horror movie and a bowl of candy.
• Trick-or-treating with the family: easy to move in, warm enough for a chilly evening, and simple to coordinate with everyone else.

Because they're so comfortable, plenty of guys keep wearing theirs long after the 31st as a goofy, cozy loungewear piece.

Easy care so you can wear it again next year

Looking after one of these is no harder than wearing it. Machine wash gentle at a maximum of 30 degrees, turn it inside out first, and wash with similar colors. Skip the bleach, the iron and the dry cleaner, and check the label on your style for tumble-drying.

Do that and your costume is ready to go again next Halloween, which makes a onesie far better value than a flimsy outfit you toss in November.