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Keep it simple. Start with the original.
The O.ATH Classic Organic Onesie features our original logo on the chest — clean, iconic, and true to the brand’s roots. Made from 100% certified organic cotton, it’s soft, durable, and gentle on skin — perfect for early movement and everyday comfort.
Designed for the next generation of Organic Athletes.
Details:
- 100% certified organic cotton
- Soft, stretchy fabric
- Envelope neckline for easy on/off
- 3 nickel-free snaps at crotch
- Reinforced seams at neck, arms, and legs
- Fabric weight: 200 g/m² (5.9 oz/yd²)
- Available in White and Natural
$28.00 USD
The O.ATH Classic Organic Onesie features our original logo on the chest — clean, iconic, and true to the brand’s roots. Made from 100% certified organic cotton, it’s soft, durable, and gentle on skin — perfect for early movement and everyday comfort.
Designed for the next generation of Organic Athletes.
Details:
- 100% certified organic cotton
- Soft, stretchy fabric
- Envelope neckline for easy on/off
- 3 nickel-free snaps at crotch
- Reinforced seams at neck, arms, and legs
- Fabric weight: 200 g/m² (5.9 oz/yd²)
- Available in White and Natural
Size guide
| CHEST (inches) | LENGTH (inches) | BABY HEIGHT (inches) | |
| 3-6M | 8 ⅝ | 16 ¾ | 23 ⅝-26 |
| 6-12M | 9 ½ | 18 ⅛ | 26 -29 ⅞ |
| 12-18M | 10 | 19 ¾ | 29 ⅞-33 ⅞ |