All about sizing the Onbuhimo PRO
How do I know what size onbuhimo I need?
- The Standard size will fit your child for a long time! We recommend this size starting when your child can sit in a tripod sit for a typically developing child, or when your child can maintain an open airway and has sufficient truck control. If you can hold your child comfortably on your hip in everyday life, they likely have enough trunk control. For a typically developing child, this is usually between 4-6mon to start and can be worn into 2T-3T pants for length, depending on your child's comfort.
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If your child is already 2yrs old and in 2T pants for length, you may be more comfortable in a Toddler size. This size fits most children from 2T through 4T pants for length, or until the child or caregiver is no longer comfortable.
- Some plus-size caregivers may be able to use the Preschool size starting when their child is around 2T pants for length. The Preschool size is much larger than the Toddler size, however, so we generally don't recommend the Preschool size until your little one is in 3T or 4T pants for length. The Preschool size can fit some children into size 7/8!
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The biggest factor for sizing is in the width of the panel, which you want to comfortably support the thigh and not overextend the knee, and the height. Your child will not fit well in the Toddler or Preschool sizes if they are not tall enough as the pocket will be too deep and uncomfortable.
- Consider how your child prefers to be carried--arms in or arms out--before sizing for the panel. We recommend arms-out for this style of carrier.
Standard size dimensions
Margin of error + or - 3cm/1.25"
Legend:
1. Detachable hood
2. Adjustable shoulder strap length / Perfect Fit Adjusters / PFAs
3. Fully adjustable sliding chest belt with buckle
4. N-tag Circoola- Used to access your manual, find detailed product information, register your carrier, and more!
5. Panel width adjustment- Soft, strong fabric ties enclosed in a casing. Pull and knot these strings to adjust panel width
6. One-way strap adjustment
Carrier dimensions:
Shoulder straps webbing range: 12.5"-44.75" / 32-114cm
Hood strap length: 21cm / 8.25"
Hood width: 21cm / 8.25"
Hood height: adjusts from 19-33cm / 7.5 - 13"
Max hood height in the center: 36cm / 14"
Width at panel top edge: 17.75" / 45cm
Height at panel center: 13.25" / 34cm
Width at base of panel: Adjusts from 9.75"-16" / 25-41cm
Toddler size dimensions
Margin of error + or - 3cm/1.25"
Legend:
1. Detachable hood
2. Adjustable shoulder strap length / Perfect Fit Adjusters / PFAs
3. Fully adjustable sliding chest belt with buckle
4. N-tag Circoola - Used to access your manual, find detailed product information, register your carrier, and more!
5. Panel width adjustment- Soft, strong fabric ties enclosed in a casing. Pull and knot these strings to adjust panel width
6. One-way strap adjustment
Carrier dimensions:
Shoulder straps webbing range: 12.5"-44.75" / 32-114cm
Hood strap length: 21cm / 8.25"
Hood width: 21cm / 8.25"
Hood height: adjusts from 19-33cm / 7.5 - 13"
Max hood height in the center: 36cm / 14"
Width at panel top edge: 19.5" / 50cm
Height at panel center: 15" / 38cm
Width at base of panel: Adjusts from 10.5"-17.75" / 27-45cm
Preschool size dimensions

Margin of error + or - 3cm/1.25"
Legend:
1. Detachable hood
2. Adjustable shoulder strap length / Perfect Fit Adjusters / PFAs
3. Fully adjustable sliding chest belt with buckle
4. N-tag Circoola- Used to access your manual, find detailed product information, register your carrier, and more!
5. Panel width adjustment - Soft, strong fabric ties enclosed in a casing. Pull and knot these strings to adjust panel width
6. One-way strap adjustment
7. Panel height adjustment - Soft, strong webbing enclosed in a casing with a pull-tab to adjust panel height
Carrier dimensions:
Hood strap length: 21cm / 8.25"
Hood width: 21cm / 8.25"
Hood height: adjusts from 19-33cm / 7.5 - 13"
Max hood height in the center: 36cm / 14"
Width at panel top edge: 51cm / 20"
Height at panel center: adjusts from 29-44cm / 11.5 - 17.25"
Width at base of panel: adjusts from 27-62cm / 10.5 - 24.5"