The Measurements
Size Guide.
Designed for babies 6–18 months. Relaxed through the torso, with growth room. When in doubt, size up.
| Size | Weight | Height | Chest | Best For |
|---|---|---|---|---|
| 6–9 Months | 16–20 lbs / 7–9 kg | 26–28 in / 66–71 cm | 17–18 in / 43–46 cm | Confident sitters starting to crawl |
| 9–12 Months | 20–24 lbs / 9–11 kg | 28–30 in / 71–76 cm | 18–19 in / 46–48 cm | Active crawlers & early cruisers |
| 12–18 Months | 24–28 lbs / 11–13 kg | 30–32 in / 76–81 cm | 19–20 in / 48–51 cm | Fast crawlers & new walkers |
Fit notes.
When to size up
At the top of a weight or height range, go up a size. Our cut is relaxed on purpose — sizing up gives room to grow without drowning the baby.
Cloth diaper friendly
Onesies fit well over cloth. For full-time cloth diapering, we recommend one size up for the most comfortable fit.
Snap closures
Snaps at the bottom for quick changes. Nickel-free and smooth-edged to prevent irritation on the softest skin.
After washing
Pre-washed organic Pima cotton — it will not shrink significantly and the fabric softens with every wash.
Still not sure?
Email your baby's weight and height to comfycrawlers1@gmail.com — we'll tell you exactly which size to order.