10 Best Adult Halloween Costumes of December 2025

• COMFORTABLY WARM AND SNUG: These adult onesie pajamas are made using ultra-soft synthetic material that feels incredibly cozy and keeps you warm during those cold nights.
• TRICK OR TREAT: The black microfleece onesie with white skeleton print is sure to be the hit of your Halloween party. They are also great for cosplay or kigurumi.
• FITS TRUE TO SIZE: We stock these scary non footed full body pjs in adult sizes ranging from XS-XXL, with the right fit giving you enough room for comfortable movement.
• DESIGNED FOR DURABILITY: All the seams in this hooded onesie are lock stitched for extra strength and provide enough allowance to prevent any tearing.
• EASY TO CLEAN: Simply toss the one piece pajamas into the washing machine for a hassle-free clean without risk of shrinking or losing color.

Just Love

• Officially licensed Star Wars Costume, a trademark of Disney and Lucasfilm; look for logo and trademark on packaging and label to help assure you've received authentic safety-tested costume
• Full length Princess Leia white mock turtleneck dress with long bell sleeves, front slit, and back zipper; includes synthetic wig featuring Leia's iconic buns and molded vinyl belt
• IMPORTANT SIZE INFORMATION: Costumes are sized differently than apparel, important to review SECRET WISHES size chart before making selection; do not select based on clothing size
• Boots available separately
• GROUPS and FAMILIES: Create your own spacefaring group with Star Wars costumes in sizes for babies, children, adults, and even pets; look for Princess Leia, Luke Skywalker, Darth Vader, Chewbacca, Han Solo, and more

Rubie's

• PERFECT SIZE:One Sizes For your Choose, L suitable for Adult 150-190cm (5-6.2ft/59-74inch) tall;
• PREMIUM MATERIALS AND BEST DESIGN: The Halloween costume is made with 100% polyester that is strong and durable so that you will never have to worry about any tears or holes. We carefully check each product before shipping to make sure that it's flawless so you can receive it in top condition.
• PRECAUTIONS:Battery operated fan inflates costume in seconds; Pls clip the battery pack on belt, don't ever put it in pocket or the device can overheat and burn your leg.Package Include: 1 x Costume ,1 x Fan, 1 x hat ! 4 x AA batteries is required (NOT INCLUDE)!
• PERFECT FOR ANY SCENE：Suitable for Parks, Zoo, Outdoors, Company Celebration or Annual Party, Bars, Club, TV SHOW, Carnival, Opening Ceremony, Weddings, Halloween, Christmas, Festivals, Birthday Party, Bachelor Party, Cos Play party etc.You will be the winner of every costume contest and draw everyone's attention on you!
• CONFIDENT STRENGTH: We are certain that you will love "Kooy “Halloween costumes as much as we do,Because we have been producing and selling these products for more than ten years. but if for any reason you are not completely satisfied with the costume, we will give you your money back -just let us know, we'll be happy to help you out!

Kooy

• Size: Medium
• COSTUME INCLUDES: This great Women's Adult Mermaid Costume comes with a ruffled collar tank top, and a mermaid tail inspired green dress. Don't forget the starfish hair clip to complete the sea goddess look. In this cute mermaid outfit, you'll be making waves at your sea-themed Halloween party or mythical creature get-together.
• FROM THE FUN COMPANY: Our Made by Us costumes always strive to create memorable and exciting costume experiences. In this eye-catching ocean sea-woman look, you'll be the woman every sea captain, island rogue, or ocean-faring pirate will try to catch the attention of. Our designers crafted this women's mermaid costume with style and comfort in mind, so you can feel confident at your favorite Halloween costume get together.
• AUTHENTIC DETAILS: Our designers studied actual mermaids in order to nail every fin, tail, and detail in this undersea costume. Well, maybe not really, but we did use every inspiration we could to design a fun womens mermaid costume for your Halloween night out. From the form fitting tank top to the mermaid tail green dress, every detail is designed to be an unmistakable version of everyone's favorite mythical ocean sea-woman.
• HIGH QUALITY COSTUME: Creating Halloween costumes for women that last is always at the top of our mind, and this mermaid outfit is no exception. Our stitching and fabrics are designed to be durable, so this great siren of the sea costume can be worn time and time again. Enjoy the comfort and allure of this high quality mermaid costume for any occasion.

Fun Costumes

• Package includes: 3 pairs of skeleton gloves and 3 seamless skull face tube masks, available for outdoor riding and Halloween for adult
• Skeleton glove size: 22 x 11 cm/ 8.66 x 4.33 inch; Skull face tube mask size: 50 x 25 cm/ 19.69 x 9.84 inch
• Good quality: made of fine quality material, comfortable and flexible, sretchable, with strong elastic, breathable, water absorbing, wicking
• Function: Halloween party scary costume and supplier accessories, good and unforgettable finishing touch to any Halloween outfit
• Wide application: black clothes printed with white skeleton bone, vivid and realistic; Suitable for climbing, running, cycling, motorcycling, boating, skating, skiing, surfing, hiking and so on

Tatuo

• One size fits all adults, contain a matching cap
• Requires 4 AA batteries, batteries are not included, it must be 4 AA batteries or it will not be powerful enough to fully inflate the costume
• Fan inflates the costumes in seconds, please clip the battery pack on belt, don't ever put it in your pocket, or the device will overheat and burn your leg
• Please tighten the outer ring in place to hold the fan before putting on the costume, otherwise, loose outer ring can cause the fan to fall off during moving
• There are elastic band on the waist and ankles to keep the costume inflated for a long time

TOLOCO

• OFFICIALLY LICENSED Marvel Avengers: Endgame adult costume, look for Marvel and Rubie's trademark on label and packaging to help assure you've received authentic, safety-tested item
• Deluxe Iron Man padded jumpsuit with attached boot-tops and mask
• READ BEFORE SELECTING SIZE: Costumes are not sized the same as apparel, use Rubie's MEN'S SIZE CHART in image, reviews and Q&A for best fit, do not choose based on age or clothing size
• Groups/ families: create your own Avengers look with costumes and accessories representing all your favorite characters, in sizes from baby to adult and even for your pet
• From movie Premiere to fan conventions, fun runs to Halloween, every reason and season, Rubie's is pleased to offer you and your family the latest and most innovative concepts in masquerade and dress-up

Rubie's

• LONG SLEEVE inflatable jumpsuit with zipper closure on back and battery operated fan
• READ BEFORE BUYING: Costumes are not sized the same as apparel, please review the Rubies SIZE CHART IN IMAGES to determine fit, recent reviews may also be helpful
• Fan requires 4, AA batteries (not included); do not use rechargeable, nickel-cadmium; remove batteries from fan while not in use From Rubies, manufacturer of the Original Inflatable Dinosaur costume
• GROUPS AND FAMILIES: Combine with other costumes by Rubies; look for regular and inflatable designs in baby, toddler, child, adult and pet sizes, also look for accessories like candy bowls, masks and more
• FAMILY-FOCUSED, and based in the U.S.A. since 1951, Rubie’s has classic and licensed costumes and accessories in sizes and styles for your entire family

Rubie's

• OFFICIALLY LICENSED DC COMICS costume shirt, look for trademark logo on package and label to help assure you've received authentic safety tested item
• SHORT SLEEVED red t-shirt with yellow-gold Wonder Woman printed bodice with attached red cape; gold headpiece with red star in center
• READ BEFORE BUYING: RUNS SMALL/FITS SNUG-is a costume t-shirt, not sized the same as clothing, consult the Rubie's adult size chart in images, reviews and Q&A to determine best fit
• EVERYDAY FUN and GREAT GROUP Costume t-shirt; fun and easy choice; themed parties, dress-up, daily wear, parades, fun runs, and of course Trick or Treat and Halloween too
• RUBIES is FAMILY-focused, and based in the U.S.A. since 1951, Rubie’s has classic and licensed costumes and accessories in sizes and styles for your entire family

Rubie's