What is a onesie?

A onesie is a loose-fitting, one-piece garment primarily worn by adults. It resembles a baby's or toddler's garment but is sized for adults. Onesies are typically made from comfortable materials like fleece , cotton, or flannel.

They are often worn as loungewear, sleepwear, or for casual wear, particularly in colder climates. Onesies can come in a variety of styles, including those that resemble animals, characters, or simply plain colors. Some onesies feature hoods, pockets, and zip or button closures. They are known for their comfort and warmth, making them a popular choice for relaxing at home.