Carrier Sizing for Most Carrier Types

Structured Carrier Panel Size

	Infant (~4-18months)	Toddler (~18-36months)	Preschool (~3-4 years)
Width	15 inches, 38cm	18 inches, 46cm	20 inches, 51cm
Height	20 inches, 51cm	22 inches, 56cm	24 inches, 61cm

These are approximate measurements for the body panel of structured carriers such as full buckle carriers, meh dais, and onbuhimos. These can vary a bit between styles, so it's recommended to draft a carrier out of cheap fabric to check the fit before making your final carrier.

These are FINISHED panel sizes and do not include seam allowances. You will need to add approximately a half inch to all four sides to account for the seam allowance.

Structured Carrier Strap Sizing

	Shoulder Strap Length	Shoulder Strap Width	Lower/Waist Strap Length	Lower/Waist Strap Width
Meh Dai	75 inches	4 - 15 inches	30 inches each	4 - 15 inches
Onbuhimo	60 inches	4 - 15 inches	Loop Diameter 3 - 6 inches	2 - 4 inches
Reverse Onbuhimo	10 - 12 inches	3 - 5 inches	40 inches	4 - 15 inches
Buckle Onbuhimo	16 inches	3 - 5 inches	n/a	n/a
Soft Structured Carrier (Full Buckle)	10 - 14 inches	3 - 5 inches	fitted to wearer's waist	fitted to wearer's waist

These are approximate measurements for the straps of structured carriers such as full buckle carriers, meh dais, and onbuhimos.

These are standard length straps. Based on the wearer's shape and size, they may need more or less length. It's recommended to draft a carrier out of cheap fabric to check the fit before making your final carrier.

These are FINISHED strap dimensions and do not include seam allowances, nor the amount of the strap that overlaps with the body panel. You will typically need to add approximately a half inch to the sides to account for the seam allowance and about four inches to the length to overlap with the body panel for reinforcement stitches.

Widths show a range. Narrow straps are more "no-fuss" and wider straps typically have more support.

Pouch Sling Sizing

	Smallest Circumference (edges)	Widest Circumference (middle)	Width
Small	48 inches, 122 cm	50 inches, 127 cm	21 inches, 53 cm
Medium	53 inches, 135 cm	55 inches, 140 cm	21 inches, 53 cm
Large	58 inches, 147 cm	60 inches, 152 cm	21 inches, 53 cm
XLarge	64 inches, 162 cm	66 inches, 167 cm	21 inches, 53 cm

Pouch slings must be carefully sized to the wearer. The sizing here gives the range including the shorter circumference (around the top and bottom rail of the pouch.) The widest part of the pouch (around the middle of the curve) would be about 2" wider. Again, this is total circumference - when the sling is laying flat, the length is half of this since it is looped over on top of itself.

"Sizing" typically approximately matches what size unisex t-shirt you wear.

Ring Sling Sizing

	Length	Width
XS	65 inches, 1.7m	26 - 32 inches, 70 - 80cm
S	70 inches, 1.8m	26 - 32 inches, 70 - 80cm
M	75 inches, 1.9m	26 - 32 inches, 70 - 80cm
L	80 inches, 2.0m	26 - 32 inches, 70 - 80cm
XL	85 inches, 2.2m	26 - 32 inches, 70 - 80cm
2XL	90 inches, 2.3m	26 - 32 inches, 70 - 80cm

Ring sling sizing is based on the wearer's size, aiming for a thigh-length tail. However, a tail can be anywhere from 12" long all the way to mid-shin and still be safe - therefore ring sling sizing is very flexible. Size is approximately equivalent to unisex t-shirt size.

Slings with tapered tails are measured from the rings down to the center of the taper.

This does not include the extra length needed to fold through the rings to sew the shoulder.

A 29"-30" wide sling is typically sufficient for most ages, from newborn through preschooler age.

Woven Wrap Sizing

	Length	Width
Size 1	83 inches, 2.1m	26 - 32 inches, 70 - 80cm
Size 2	102 inches, 2.6m	26 - 32 inches, 70 - 80cm
Size 3	122 inches, 3.1m	26 - 32 inches, 70 - 80cm
Size 4	142 inches, 3.6m	26 - 32 inches, 70 - 80cm
Size 5 (XS, S Base)	161 inches, 4.1m	26 - 32 inches, 70 - 80cm
Size 6 (M Base)	181 inches, 4.6m	26 - 32 inches, 70 - 80cm
Size 7 (L-XL Base)	201 inches, 5.1m	26 - 32 inches, 70 - 80cm
Size 8 (2X-3X Base)	220 inches, 5.6m	26 - 32 inches, 70 - 80cm
Size 9 (3X-4X Base)	240 inches, 6.1m	26 - 32 inches, 70 - 80cm

With few exceptions, almost any size wearer can use any size woven wrap; wrap size just changes what carry styles you can use the wrap for. The most versatile size needed for full-length carries is referred to as one's "base size." Base size usual starts at a size 5 for wearers who wear unisex size small or extra small shirts, size 6 for medium to large t-shirt wearers, size 7 between large and approximately 2XL, size 8 for 2XL-3XL, and so forth. One's base size may be one or two sizes longer than this when wrapping a toddler or preschooler compared to wrapping an infant.

Other sizes are then referred to by their relation to one's base size. For a base 6 wearer, a size 4 wrap would be referred to as a "base-2" or "base minus two" sized wrap.

Base and base-2 are both popular, versatile sizes, but any size wrap can be usable in some way.

A standard width of 27"-29" is typically sufficient for most ages, newborn through preschool.