Size Chart
True to size with a roomy, grow-with-them fit — compare your child’s age, weight, and height to find the best match.
| Size | Age | Weight | Height |
|---|---|---|---|
| Newborn | Newborn | 8–12 lbs | 18–22" |
| 0-3 Months | 0–3 Months | 12–15 lbs | 21–25" |
| 3-6 Months | 3–6 Months | 14–17 lbs | 24–26.5" |
| 6-9 Months | 6–9 Months | 17–22 lbs | 26.5–29" |
| 9-12 Months | 9–12 Months | 19–25 lbs | 29–31" |
| 12-18 Months | 12–18 Months | 24–27 lbs | 31–33" |
| 18-24 Months | 18–24 Months | 27–30 lbs | 33–34" |
| 2T | 2 Years | 28–30 lbs | 34–36" |
| 3T | 3 Years | 31–34 lbs | 36–39" |
| 4T | 4 Years | 39–42 lbs | 39–42" |
| 5/6 | 5–6 Years | 39–48 lbs | 42–48" |
| 7/8 | 7–8 Years | 48–69 lbs | 48–54" |
| 9/10 | 9–10 Years | 69–87 lbs | 54–57" |
| 12/14 | 9–11 Years | 87–100 lbs | 58–61" |
| 16 | 12–13 Years | 110–120 lbs | 61–63" |
See Tikes Fans with our Pajamas
Why Choose our Premium Bamboo Viscose Fabric?
A Portion of your Purchase is Donated to:
Frequently Asked Questions
What makes the double zipper design so convenient?
Our signature two-way zipper opens from the top or the bottom — which means middle-of-the-night diaper changes without undressing your baby from the shoulders down. Unzip from the feet, change, zip back up, and everyone's back to sleep faster. Once you've used one, it's hard to go back.
What fabric is the zippered one-piece made from?
Every one-piece is made from silky-soft bamboo viscose — the buttery-smooth signature fabric we use across our collection. It's lightweight, gentle, and cozy for sleep, play, and every game-day nap in between.
What sizes do the zippered one-pieces come in?
Our sports-inspired one-pieces are sized for babies and toddlers, from newborn through 24 months. For the best fit, start with your child's height on our size chart rather than age alone — babies come in all builds! Need help choosing? Contact us and we'll point you to the right size, and exchanges are always free if it's not quite right.
Do the one-pieces have footies?
Yes — our one-pieces feature convertible footies, so you can cover little toes for sleep or fold them back for playtime and car rides. It's one of those small details parents tell us they love, along with the tag-free labels that keep everything comfortable.
How do I wash and care for the bamboo viscose one-piece?
Machine wash cold on a gentle cycle with like colors and a mild detergent — no bleach or fabric softener. Tumble dry low or hang to dry, and the fabric stays soft wash after wash. Zip the zipper closed before washing to protect the fabric and the zipper pull.
What are your shipping and return policies?
We ship every order for a $5 flat rate, and most orders head out the door within one business day. If something isn't quite right, you have 30 days from delivery to request a free return or exchange — items just need to be unworn, in original packaging with tags attached. Visit our Start a Return or Exchange page to get going.