The 4moms ® mamaRoo ®4 infant seat bounces up and down and sways from side to side, just like parents do when comforting their babies. It features five unique motions and five speed options for a total of 25 different combinations.

Bounces up and down and sways from side to side, just like parents do.

Starting at $329.99

It moves like you do

The only infant seat that replicates natural motions of parents.

5 unique motions

  • car ride
  • kangaroo
  • tree swing
  • rock-a-bye
  • wave

The ultimate seat

The original and ONLY infant seat that replicates natural motions of parents

Learn why the mamaRoo is the ultimate seat

NEW! Cool Mesh Fabric

Keep baby cool and comfortable


Smooth nest-knit fabric with breathable 3D air mesh

*shown with the NEW cool mesh newborn insert; sold separately

Used in more than 300 hospitals

“The mamaRoo is calming because it provides an environment that is similar to still being in utero – babies feel contained, they’re moving, there’s a bit of sound – and we find that very soothing for our babies.”

– Alan Lantzy, MD; Neonatologist and Pediatrician

Believe in better®

Parents don't vibrate like bouncy seats or swing like swings. We believe that infant seats would be better if they replicated the natural motions parents use to comfort their babies. That's why we created the 4moms® mamaRoo®4 infant seat. We put sensor vests on parents to understand those motions and then replicated the bouncing and swaying in the mamaRoo to soothe and entertain better than traditional infant seats.

Bring home the mamaRoo4

  • grey
  • multi
  • cool
  • silver
  • black

Starting at $329.99


Feature details

  • 5 unique motions (car ride, kangaroo, tree swing, rock a bye, and wave)
  • 5 speeds
  • 4 built-in sounds
  • MP3 compatible
  • Bluetooth enabled -- control motion and sound from your compatible smart device (See supported devices)
  • Adjustable seat recline
  • Toy mobile with interactive, reversible toy balls that include a rattle, mirror and crinkle ball.


  • Dimensions : 33"L x 19.5"W x 25.5"H / 83.8 l x 49.5 L x 64.7 H cm

  • Weight : 19 lbs / 8.6 kg

Age & weight limit

For use from birth until child reaches maximum weight limit of 25 pounds or can sit up unassisted or attempts to climb out, whichever comes first.

Maximum weight: 25 pounds / 11 kg


AC adaptor (no batteries required)

Fabric care

All seat fabrics are easy to remove and machine washable.


1 year warranty (Learn More)

2 seats, 2 unique motions.

  • mamaRoo®4

    It moves like you do

  • rockaRoo®

    BIG motion, small size