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Boba 4GS

The Boba 4GS is safe and comfy, streamlined for simplicity, a real no-fuss carrier! But even with such an intuitive design, you want to know how to put it on properly, right?

Below you'll find step-by-step instructions for both the Front and Back Carry, how to adjust the added insert for your newborn, and some handy tips and tricks!

Using the Infant Insert

The infant insert enables you to wear your baby before they can fit with their legs out of the carrier! They can usually comfortably fit the seat of the carrier from knee-to-knee at around the 6 month mark!

The included infant insert can be used in 3 positions.

Please note that all weight ranges are approximate - the most important factor when choosing which insert position to use is that your baby's legs are fully supported from knee-to-knee without overextending. If your baby is above the suggested weight range for a position but their legs overextend when placed in the next position, continue using the previous position until their legs can hang freely at the knee.


7-10lbs | 3-4.5kg

If your baby is 7-10 lbs | 3-4.5 kg, their legs should be in the fetal tuck around the Boba Infant Insert in Position 1. If your baby’s head is half way out of the carrier, then you can use Boba Insert Position 2. Your baby's legs will stay tucked inside the carrier when using this position.


10-15lbs | 4.5-6.8kg

If your baby is 10-15 lbs | 4.5-6.8 kg, please use Boba Infant Insert in Position 2. Your baby’s legs should be in an M position around the opened infant insert without their knees overextending. As your baby grows, their legs will start to naturally come out on either side of the carrier..


15-30lbs | 6.8-13kg

If your baby is 15-30 lbs | 6.8-13 kg, please remove the Boba Infant Insert. Your baby’s legs should be supported from knee-to-knee with their lower legs hanging freely from the sides of the carrier.

Front Carry


Fasten and adjust the waist buckle at your back. Allow the body of the carrier to hang down in front.


Bring your baby to your chest and separate their legs over the sides of the waist belt or over the infant insert (if needed - see above).


Bring the body of the carrier up over your baby’s back while securely supporting your baby.


Use one hand to continue supporting your baby. Use your other hand to bring the shoulder strap over your shoulder. Switch hands and repeat with the other shoulder strap.


If using the infant insert, note how a smaller baby is constantly being supported during this process. If using insert Position 1, their legs will remain inside the carrier.


Bring both hands behind your neck and fasten the chest strap. Tighten to secure. NOTE: Chest strap can slide up and down the piping of the shoulder straps. Adjust evenly on both sides to find your perfect fit.


Tighten the shoulder straps by pulling down
on the adjustment straps if needed.


Enjoy wearing your baby! If you are not using the infant insert, ensure the fabric of the carrier spreads from knee-to-knee and your baby's lower leg hangs freely at the knee.


If your are using the infant insert in Position 1, your baby's legs will remain inside the carrier.

Front Carry with the Infant Insert

Front Carry without the Infant Insert

Back Carry

20–45lbs | 9–20kg


Place the carrier on your back with the shoulder straps on your shoulders. Fasten the waist belt in the front.


Slide the right strap off your shoulder.


Holding your baby securely on your right hip, slide your left hand between the carrier and your body. Take hold of your baby’s left foot and pull it through the carrier.


At the same time, bend forward to shift your baby’s weight to your back.


Still bending forward, support your baby with your left hand while moving your right hand through the shoulder strap.


Fasten the chest strap and secure. Chest strap
should be at armpit level. NOTE: Chest strap can slide up and down the piping of the shoulder straps. Adjust evenly on both sides to find your perfect fit.


Tighten the shoulder straps by pulling down
on the adjustment straps if needed.


Enjoy wearing your baby!


  • Back carry is only recommended for babies with full head/neck control and who can sit unassisted.
  • Practice over a bed or couch the first few times. Soft landing = no stress!
  • Use the included hood to support your baby's head if they fall asleep.
  • Check out the video below for another great method of getting your baby into the back carry position!

Additional 4GS Features

Discover even more features of your Boba 4GS carrier!

  • Adjustable Infant Insert
  • Detachable Hood & Hood Pocket
  • Sliding Chest Straps
  • Waistband Pocket (perfect for your phone, wallet, keys, etc!)
  • Fun & Playful Prints
  • Easy Storage (just roll towards the waistband and snap to secure)

Help & Fit Consultations

Not only are we passionate about our products, we're passionate about making sure parents and caretakers have the best, safest, and most magical experience wearing their babies. Still can't quite figure out how the infant insert? Baby doesn't seem positioned correctly? Just want to confirm that your baby is ergonomically positioned and comfortable?

Boba proudly offers complimentary one-on-one video consults with our in house Babywearing educator to answer any questions you might have and to get personal fit support with your new Boba 4GS Carrier.