How the kids' range is grouped
On its US site, UGG splits children's footwear into three groups (Baby, Toddlers and Big Kids), each with its own size guide. The age ranges are only a rough guide, and UGG's own pages don't describe them in exactly the same way, so always size by foot length rather than by age.
| Group | Rough ages, per UGG | US sizes | Typical styles |
|---|---|---|---|
| Baby | 0 to 2 years | Paired sizes: 0/1, 2/3, 4/5 | Soft booties with hook-and-loop straps |
| Toddlers | 2 to 5 years | Single sizes up to 12, labeled with a T on UGG's toddler chart (9T, for example) | Short sheepskin boots, slippers, chukkas |
| Big Kids | 6 to 10 years | 13, then 1 to 6 (some charts continue to 7) | Most of the adult designs in smaller sizes |
Two practical consequences follow. First, the same number can mean very different lengths depending on the group: on UGG's charts a toddler 6 is a far smaller shoe than a big-kids 6, so check which group a size belongs to before you order. Second, the largest big-kids sizes overlap with small adult sizes. When an older child moves into women's or men's styles, compare heel-to-toe lengths on UGG's charts instead of converting by number. Our sizing guide covers the adult charts.
Measuring growing feet
UGG's printable kids' size chart uses the simplest method there is: stand your child on the chart with their heel against a wall, measure one foot and then the other, and read off the length. You can do the same with a sheet of paper and a ruler.

- Put a sheet of paper on a hard floor, pushed up against a wall.
- Have your child stand on it with their heel touching the wall and their weight on both feet.
- Mark the tip of the longest toe and measure from the wall to the mark.
- Repeat with the other foot, then look up the longer measurement on the chart for the right group.
The tips printed on UGG's chart are worth following. If the two feet measure differently, buy for the larger one. If a measurement falls between two sizes, go up a size. Measure length only. And re-measure every couple of months, because children's feet can change size quickly. UGG's help center describes its kids' shoes as generally true to size. If your child usually wears thick socks with boots, measure with those socks on.
Kids' boots
Most of the kids' boots are scaled-down versions of the adult sheepskin styles, so the Classic boots guide is useful background. The differences are in the details: shorter shafts for smaller legs, and in some models, closures that small hands can manage.
Classic II
The kids' Classic II is the children's version of the original sheepskin boot. In big-kids sizes it has a 6-inch (about 15 cm) shaft, and the toddler version is shorter. The upper is 17 mm Twinface sheepskin (suede outside, fleece inside), the insole is a UGGplush™ wool blend, and the outsole is a light foam: either Treadlite by UGG™ or a sugarcane-based EVA, depending on the production run. Like the adult Classic II boots, the sheepskin is pre-treated to help it resist water and stains.
That treatment helps with splashes and spills, but it doesn't make the boot waterproof, and owner reviews echo the point: this is a boot for cold, dry days rather than rain or slush. For snow days, see the waterproof options further down.
Read owner reviews of the Classic II · Review yours
Kids' Classic Ultra Mini
The ankle-height Ultra Mini also comes in kids' sizes. Listings put the shaft at roughly 3 to 3.5 inches (8 to 9 cm), with the same Twinface sheepskin build as the Classic II and a rear pull tab. The low collar makes it the easiest of the sheepskin boots for a child to pull on alone, and it works well with leggings and joggers.
It covers less of the leg, so snow gets in over the top more easily. Save it for dry days and pick a taller or waterproof boot for sledding.
Read owner reviews of the kids' Classic Ultra Mini · Review yours
Kids' Bailey Bow II
The Bailey Bow II takes the basic Classic shape and adds fixed bows down the back of the shaft. In big-kids sizes the shaft is about 6 inches (15 cm); the toddler version is shorter, and UGG has also made Mini and Tall versions for kids. The upper is Twinface sheepskin with a moisture- and stain-resistant treatment, over a Treadlite outsole.
The bows are decorative rather than functional, so when buying secondhand, check that they are intact and that the sheepskin around them isn't worn. A women's Bailey Bow II exists as well, and earlier members of the Bailey family are covered on our retired icons page.
Read owner reviews of the kids' Bailey Bow II · Review yours
Neumel II
The Neumel II is the kids' version of the Neumel chukka from the men's range. It has a suede upper, a wool lining (UGGpure™ or UGGplush, depending on the version), cotton laces, a Treadlite outsole and a water-repellent finish. Many versions also have a zipper on the inside of the ankle, so the laces can stay tied while the boot goes on and off. The shaft is low, roughly 2.75 to 3.5 inches (7 to 9 cm) depending on the size.
A chukka fits closer than a pull-on sheepskin boot, and a few owners of toddler pairs describe it as snug around the ankle and tricky to get on, so measure carefully and check the fit notes in reviews.
Read owner reviews of the Neumel II · Review yours
Kids' slippers
Kids' Tasman II
The Tasman II is the kids' take on the Tasman slip-on, complete with the braid detailing that marks the style. The listings we checked give it a suede upper, a wool lining and insole (UGGpure or UGGplush) rather than a sheepskin one, and a light foam outsole, so it can handle a trip to the car or a sleepover as well as the living room. There is no fastening; it simply slips on. It comes in toddler and big-kids sizes.
Owner fit notes are mixed on length: some say it is true to size, while others found the larger kids' sizes roomier than expected. Check the heel-to-toe chart rather than assuming a kids' size equals an adult size.
Read owner reviews of the kids' Tasman II · Review yours
Kids also get a version of the Tazz platform slipper. UGG lists about a 1-inch platform for the kids' version, compared with about 1.75 inches for adult pairs; see our platforms guide. The adult slipper range is in the slippers guide.
Baby booties
Bixbee
The Bixbee is UGG's baby bootie: a soft, simple shape with a hook-and-loop strap that helps it stay on small feet. Depending on the version, the upper is terry cloth, fleece or a recycled-polyester textile rather than sheepskin. It comes in paired sizes (0/1, 2/3 and 4/5), which UGG's US listing ties to roughly 0 to 6, 6 to 12 and 12 to 18 months. UGG also sells it in gift sets with a matching blanket, beanie or mittens, and files some of those sets under pre-walker shoes.
Read owner reviews of the Bixbee · Review yours
The baby range has also included a bootie version of the Bailey Bow with hook-and-loop closures, for parents who want the look of the bigger boot in a softer, easier shape.
Snow, rain and the walk to school
None of the sheepskin boots above are waterproof. For snow days and slushy walks to school, UGG makes kids' cold-weather boots, including a kids' Adirondack Boot XXV in lace-up and pull-on versions. UGG describes both as waterproof and rates them to -32°C (about -26°F), and the pull-on has a toggle at the collar to help keep snow out. Our weather boots guide explains how waterproof boots differ from treated, water-resistant ones.
Closures: what kids can manage themselves
- Pull-on: Classic II, Classic Ultra Mini and Bailey Bow II. There is nothing to fasten or break, and the lower the shaft, the easier it is.
- Slip-on: Tasman II and other slippers. The easiest of all.
- Laces plus an inside zipper: many versions of the Neumel II. A closer fit; the zipper does the daily work.
- Hook-and-loop: baby booties such as the Bixbee.
- Toggles: some cold-weather boots close the collar with a toggle to keep snow out.
How kids' pairs hold up
Kids' footwear lives a harder life than adult pairs, and the materials age in the same ways:
- Suede scuffs. Toes and heels take the most abuse, especially on scooters and bikes. A suede brush and eraser deal with most marks; our care guide covers the details.
- Linings pack down. Sheepskin and wool linings compress with wear, so a snug new pair feels roomier after a few weeks, and a well-worn hand-me-down can feel noticeably flatter inside than a new one.
- Treatments fade. Factory water- and stain-resistant treatments wear off with use and cleaning. A protector spray made for sheepskin and suede can top them up.
- Wet boots need patience. Let soaked boots dry slowly at room temperature, stuffed with paper to hold their shape, away from radiators, fires and direct sun.
- Foam soles wear. Light foam outsoles are flexible and comfortable but can wear faster than rubber lugs on rough ground.

Owned a pair through a whole winter? Your notes on fit and wear help other parents decide; you can write a review or browse owner reviews.
Frequently asked questions
Should I buy UGG kids' boots a size up to grow into?
UGG's printable kids' chart advises buying for the larger foot and going up a size only when a measurement falls between two sizes. Rather than buying far ahead, re-measure every couple of months.
Are kids' UGG boots waterproof?
The sheepskin boots, such as the Classic II and the Bailey Bow II, have a water- and stain-resistant treatment but aren't waterproof. For snow and slush, look at UGG's kids' cold-weather boots, such as the Adirondack Boot XXV, which UGG describes as waterproof.
What are UGG's kids' size groups?
UGG groups children's shoes as Baby (roughly 0 to 2 years, with paired sizes such as 2/3), Toddlers (roughly 2 to 5 years) and Big Kids (roughly 6 to 10 years, sizes 13 and 1 to 6). Size numbers repeat across groups, so check which group a size belongs to.
When should my child move from kids' to adult UGG sizes?
The largest big-kids sizes overlap with small adult sizes. Compare your child's heel-to-toe length on UGG's kids' and adult charts instead of converting by number.
Do kids' Tasman slippers have a sheepskin lining?
The kids' Tasman II listings we checked use a wool lining and insole (UGGpure or UGGplush) under a suede upper rather than sheepskin. Materials can change between versions, so check the specific listing.
Sources
- UGG: Baby shoes size guide
- UGG: Toddlers' shoes size guide
- UGG: Big kids' shoes size guide
- UGG: Printable kids' size chart (PDF)
- UGG Help Center: Kid's shoes sizing
- UGG: Kids' rain and snow boots, Big Kids (6-10 years)
- UGG: Classic II boot for kids (product page)
- UGG: Bailey Bow II boot for big kids (product page)
- UGG: Neumel II boot for kids (product page)
- UGG: Tasman II slipper for kids (product page)
- UGG: Bixbee bootie for babies (product page)
- UGG: Adirondack Boot XXV for kids (product page)
- Deckers Brands: UGG Unveils the New Classic (Classic II press release, 2016)
- Altitude Sports: UGG Classic II, big kids (spec sheet)
- Altitude Sports: UGG Classic Ultra Mini, kids (spec sheet)
- Altitude Sports: UGG Bailey Bow II, big kids (spec sheet)
- Altitude Sports: UGG Tasman II, big kids (spec sheet)
- Altitude Sports: UGG Neumel II, toddlers (spec sheet)



