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Carrier Sizing guide

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Carrier sizing info

Action Baby Carriers:

Regular size

  • Waistband height 4′′
  • Width of shoulder straps 3′′
  • Main Body including waistband 18′′ tall, 13.5′′ wide
  • Hip Strap 28′′ to 53′′ with 27.5′′ of padding
  • Shortest possible length of shoulder straps 17′′ (plus size is 22′′) (not including buckle)
  • Fits baby from 8-40lbs

Toddler size

  • Recommended for children over eighteen months old
  • Shorter straps ensure a close fit in a back carry
  • Waistband height 4”
  • Width of shoulder straps: 3”
  • Main body including waistband: 21” tall, 19” wide
  • Shortest possible length of shoulder strap: 15” (not including buckle)
  • Fits children 15-45lbs


Standard Hawks - straps 68'-72'

fits newborns up to 40 lbs

Toddler Hawks - +3" tall and +3' wide of the standard

Fits toddlers 18 months+


Baby: 14" wideX14" tall. Fits babies from 3 month -up to a year
Standard: 16" wideX16" tall is for age 12month - 2 years, but it may fit til 2.5y for smaller babies.
Toddler: 18" wideX18" tall for 2 year and up.
Fit for all sizes depends on baby's height and weight of course

On a stock Bamberoo with PFAs:

-Leg padding
-Flat hood is a great cover against the sun and for nursing babies.
Adjust with a drawstring and cord lock. When the hood scrunched down to the smallest setting it'll fit smaller babies. On the largest setting it'll fit a 2-3 yo toddler.
-Shoulder straps without PFA's has 16.5" long padding on standard length.
-Adjustable shoulders go from petite 15.5" to 21"
-The waist is very slightly curved, padded with polyfoam, adjust from 28"-48" with double adjustable buckles.

Gracie and Sam


 Small (16" x 20")



  • Wide seat: 14.5”
  • Narrow Seat: 7”
  • Body (neck support up) 18.5” –not including waist.
  • Body (neck support down) 14” –not including waist. This is top of neck support (folded over) to bottom of seat
  • Age: Newborn to toddler (minimum 7 lbs/3.2 kg)
  • Use wide seat setting.
  • No extra insert needed
  • Click on the link to view the carrying positions based on the size and age of baby 



  • WIDTH: 20" main panel 17.7" at leg 
  • HEIGHT: 17.5" panel 5.5" waistband 
  • LENGTH: 28"-55" waistband
  • Age:12 months + Weight Range: 20 - 60 lb

MJ Baby Carriers

Standard size weight limits 18-45 lbs.

Standard height is 15 inches from the top of the waist seam to the bottom of the neck/collar seam (16.5" for panel including headrest). The width at the widest point (shoulder strap to shoulder strap) is 16 1/2 inches. Knee to knee is 14 inches.

Toddler size weight limits 25-50 lbs.

Toddler height is approximately 16.5-17" inches from the top of the waist seam to the bottom of the neck/collar seam (19" panel including headrest). The width at the widest point (shoulder to shoulder strap) is 20 inches. Knee to knee is 16 inches. 


  • Stage 1 (baby): 16″ wide seat, not including seat darts
  • Stage 2 (toddler): 18″ wide seat, not including seat darts
  • Stage 3 (pre-schooler): 20″ wide seat, not including seat darts

***We will do our best to keep things updated here at Baby Geekery but sometimes makers make changes to their products so we always suggest to double check on their site to make sure that the information is still the same. 

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