Christmas Onesie Pajamas

Some Christmas pajamas come in two pieces—Christmas onesie pajamas come in one. These zip-up footed sleepers, hooded one-pieces and adult union suits wrap you in a single warm layer from neck to toes, with no gap at the waist and no socks to lose in the sheets. Sized from baby to adult, the onesie is the coziest way to do Christmas Eve, whether you're zipping up a newborn or climbing into your own footed pair.

One Christmas Onesie Sized for Every Age

The Christmas onesie is a category of its own—one piece, zipped or snapped closed, with nothing separate to lose track of. Shop zip-up footed sleepers for babies and toddlers, hooded one-piece styles for kids, and full-length adult Christmas onesies and union suits for parents, so everyone in the house can grab the same silhouette in a size built for them.

All-in-One Warmth with the Feet Included

A onesie solves the gap a two-piece set can't. There's no rucked-up hem at the waist and no cold ankle peeking out from under a blanket—just one warm layer from collar to covered feet. Built-in footies keep toes warm without loose socks working free in the crib or the bed, which matters on a cold December night more than any print does.

From Baby Footie to Adult Union Suit

Every member of the family gets their own version of the same idea. Newborn and baby onesies zip up small enough for a first Christmas, kids' hooded onesies fit growing wiggly limbs, and adult Christmas onesies and union suits scale all the way up—so parents can match kids in the exact same silhouette instead of hunting down a grown-up version elsewhere.

Snug-Fit Safety for Kids' Footed Onesies

Footed sleepwear only works if it fits close. Our baby and kids' onesies follow the snug-fit guidance parents look for in children's sleepwear, so there's no loose, baggy fabric bunching around little feet and legs overnight. Adult onesies are cut for a relaxed, comfortable fit instead, since the safety guidance that shapes kids' sleepwear doesn't apply to grown-ups.

Soft Bamboo & Cozy Fleece One-Piece Fabrics

A one-piece design only feels good if the fabric does its job. Baby and toddler onesies come in breathable bamboo that's gentle on sensitive skin, while kids' and adult styles lean on warm brushed fleece for the coldest nights of the year. Either way, you get a fabric built to keep the whole body warm without overheating under the covers.

Zip-Up Onesies That Are Easy to Gift

A onesie is the fastest way to get dressed for bed—zip it up, and you're done, no matching top and bottom required. That same simplicity makes it an easy Christmas Eve gift to hand out and wear the same night. Machine wash cold and tumble dry low to keep the zipper, snaps and print in good shape all season.