Whether you're wearing them as pajamas, or to a themed party, adult onesies are a fun and versatile piece to add to your closet. Ranging in style from sultry to silly, there is a design out there that suits every need and every preference. If you're on the market, check out our top five favorite adult onesies and pick the one that works best for you. Forever Lazy Footed Adult Onesies A Playful, Colorful, and Comfortable OnesiePerfect for both men and women, this soft and easy-to-wear onesie is a versatile option for any occasion.Best OverallFind on Amazon This onesie is 100% polyester and designed to fit both men and women. The soft and comfortable material is a plush fleece to ensure you always feel comfortable and cozy, even after it’s been washed. The design features a hood, deep side pockets, and a front zipper so it’s easy to get on and off. The back also has a rear zipper drop seat, making it easier than ever to use the bathroom. Pros: Soft fleece fabric Hood and pockets Front zipper closure Cons: Unconventional sizing ABENCA Fleece Onesie Pajamas for Women A Colorful and Whimsical Onesie You'll LoveThis bright unicorn design will have you smiling the whole time you wear it.Most ColorfulFind on Amazon This bright and playful style is made of premium fleece so you’ll feel cozy and comfortable. The multi-color design features an allover star pattern and has a lined hood complete with eyes, ears, and unicorn horn. The back also features a multicolored tail to finish the overall look. Pros: Soft, premium fleece Front zipper closure Lined hood Cons: Unconventional sizing ROYAL WIND Adult Onesie Pajama Halloween Costumes for Adult and Teenagers An Adult Onesie and Costume Rolled into OneThis fun and unexpected design will put a smile on anyone's face.Most PlayfulFind on Amazon This oversized onesie design is perfect for your next costume party or Halloween get-together. The hood is made to look like a character’s face and is expertly sewn to ensure it stands the test of time. The back has a stuffed tail to add a fun and unexpected element to the overall look. The easy-to-wear design has a front button closure so it’s easy to get on and off, and the soft material makes it comfortable for long-lasting wear. Pros: Front button closure Professional quality Stuffed nose and tail Cons: Unconventional sizing WOTOGOLD Men and Women Adult Pajamas Sportswear Hooded Unisex Jumpsuit A Onesie That Can Be Worn AnywhereThe sleek and fashionable design can be worn lounging around the house or while running errands.Best for Everyday WearFind on Amazon The long sleeve, non-footed onesie is a piece you can wear for many occasions. The casual, sporty look works for around the house, but you can also wear it out to take care of errands or visit friends thanks to its stylish design. The lined hood and contrasting cuff and zipper details give it a sportswear vibe for a casual but sophisticated look. The design also has two front pockets so you can carry your belongings, and it’s easy to pull on and off as needed. Pros: Non-footed design Contrasting zippers and cuffs Lined hood Cons: Unconventional sizing NEWCOSPLAY Unisex Adult Kid Flying Squirrel Pajamas A Onesie that Works for Kids or AdultsGet your own or match your family for a fun and funky costume or pajama set. Best for FamiliesFind on Amazon This cozy flying squirrel onesie is a silly and soft option for your whole family. The special material is a plush and soft blend that will keep you warm and cozy even on the coldest days. The loose fit ensures it will fit any size and keep you comfortable, and the front button closure makes sure it’s easy to wear. Pros: Adult and children’s sizes available Front button closure Soft, plush material Cons: Unconventional sizing Frequently Asked Questions Can adults wear onesies? Onesies are perfect for both adults and children alike. Onesies are perfect for lounging at home or to double as pajamas, but they also are popular for events like music festivals, parties, and parades thanks to their fun designs and comfort. Are onesies unisex? Most adult onesie designs are made in unisex sizing. Be sure to check the size chart for the particular style you are interested in to ensure you get the correct size to suit you. Do you wear clothes under onesies? If the onesie is loose-fitting, it is an option to wear clothing underneath, especially if you are attending an event or party. If you are lounging at home or wearing a tighter-fitting design, it may be more comfortable to wear only undergarments underneath—what you wear under your onesies is a totally personal preference.