Woman pushing YPSI next to woman pushing DEMI Next

Peg Perego YPSI vs. Nuna Demi Next Stroller Comparison

If you’re in the market for a stroller that can grow with your family - from the early years to multiple stroller riders, the Peg Perego YPSI and the Nuna DEMI Next are excellent options!

The Peg Perego YPSI and Nuna DEMI Next are both convertible strollers that can start as single strollers and later convert to hold two children in seats or a combination of seat, car seat, or bassinet! They are also great options for twins as both can hold two seats, two car seats, or two bassinets.

The Peg Perego YPSI is newer as it only debuted in 2019 and gained a second seat option in 2020. But its manufacturer isn't new to the stroller game: Peg Perego is an Italian maker of baby gear since 1949. The YPSI is also one of the lightest strollers that convert to a double, weighing in at only 22.6 pounds as a single.

The Nuna DEMI Next is Nuna’s only double stroller, and is unique in how the seats are arranged. Instead of the stadium or tandem seat option often seen (like on the YPSI), the DEMI Next has stacked seats. This configuration makes the stroller easier to steer and less long when in double mode!

In this post, we'll help you determine which stroller is better for your family: the Peg Perego YPSI or the Nuna DEMI Next

Double YPSI next to double DEMI Next

Peg Perego YPSI

The Peg Perego YPSI is among the lightest and most affordable convertible strollers on the market. Just add a set of adapters to the YPSI’s 22-pound frame, and your stroller instantly becomes a double when you add an infant car seat or bassinet for your newborn.

All-wheel suspension, a standing fold and a height-adjustable canopy are among the features that make the YPSI easy to use and maneuver.

Made in Italy by Peg Perego, the YPSI offers a two year warranty with a one year extension if registered within three months of purchase. Peg Perego introduced a second seat for the YPSI in 2020, although the stroller itself did not change.

Nuna DEMI Next

The DEMI Next is Nuna's first stroller that can accommodate a second seat for siblings or twins. The DEMI Next offers a sleek design, 2-year warranty, sturdy all-terrain wheels with adjustable suspension, and compatibility with the Nuna PIPA series of infant car seats considered to be among the safest on the market.

The DEMI Next includes a zip-out seat lining for an all-weather mesh seat and custom dual suspension that changes the ride for smooth and rough surfaces. A magnetic buckle makes it even easier to help your child in and out of the stroller, while brown leatherette detailing on the handle and bumper bar add a contemporary look.

In 2024, Nuna updated the DEMI Next - previously called the Demi Grow. New additions include: 

  • Included riding board (compatible only in single mode with Demi Next and not sold separately) - holds 50 pounds

  • Larger basket that holds 22 pounds

  • More canopy ventilation 

  • Over a pound lighter in weight (now 26 pounds!)

  • Updated footrest that allows children to be able to climb into the seat by themselves

  • The Aire Protect canopy cover is now a matching black material versus being a light taupe on the Demi Grow

  • One additional upright position on the seat for children's comfort

  • Front wheel size increased by one inch

Peg Perego YPSI vs. Nuna DEMI Next Stroller Price

For current pricing, please see the respective product pages.

The purchase of the Peg Perego YPSI stroller includes:

  • YPSI stroller with seat and chassis
  • Adapters for Peg Perego infant car seat manufactured in January 2018 or later

The purchase of the Peg Perego YPSI Double stroller includes:

  • Peg Perego YPSI stroller with seat and chassis
  • Links (car seat adapters) for Peg Perego infant car seat manufactured in Jan. 2018 or later
  • YPSI Companion Seat
  • Douple adapter set (upper and lower adapters)

 Peg-Perego YPSI stroller

The purchase of the Nuna DEMI Next stroller includes:

  • Nuna DEMI Next stroller with one seat
  • Rider board
  • Ring car seat adapter
  • Set of traditional car seat adapters
  • Fenders
  • Rain cover

The purchase of the Nuna DEMI Next Double stroller includes:

  • Nuna DEMI Next stroller with two seats (primary seat and sibling seat)
  • Rider board (will only work when the stroller is in single mode)
  • Ring car seat adapter
  • Set of traditional car seat adapters
  • Fenders
  • Rain cover (2) 
Close up of Nuna DEMI Next buckle

Peg Perego YPSI vs. Nuna DEMI Next Weight and Dimensions

The Peg Perego YPSI is the lightest stroller on the market that converts from single to double, weighing 3.4 pounds less than the Nuna DEMI Next as a single. It's also 4 inches narrower, helping to navigate tight spaces. The DEMI Next may be better for taller parents though as the handlebar comes up 3.25 inches higher than the YPSI.

When configured as a double stroller with two seats, the YPSI is still about 4 pounds less than the DEMI Next Double. The YPSI is also smaller when folded.

*Note that the DEMI Next weights do not include winter seat, canopy, armbar, or rider board*

Single Stroller Weight

  • YPSI: 22.6 pounds
  • DEMI Next: 26 pounds 

Double Stroller Weight

  • YPSI: 31.5 pounds
  • DEMI Next: 34 pounds

Single Stroller Open Dimensions

  • YPSI: 39.25"L x 20"W x 40.25”H
  • DEMI Next: 39.5"L x 24"W x 43.5"H

Single Stroller Folded Dimensions

  • YPSI: 15.25"L x 20"W x 32.25"H
  • DEMI Next: 23.5"L x 24"W x 35"H

Wheel Size

  • YPSI: 7.2” front wheels; 10.5” rear wheels
  • DEMI Next: 7” front tires; 11” rear tires 


Peg Perego YPSI vs. Nuna DEMI Next Weight Limit

Both the YPSI and DEMI Next have two identical seats when you turn them into doubles. Your children can sit in whichever seat they prefer as long as they are within the 50 pound weight capacity of ether seat. This is unique, as many double strollers have two different sized seats with different weight capacities.

The seats of the YPSI and DEMI Next are very similar in size. The YPSI has an overall taller seat to canopy height, but the DEMI Next has a deeper seat.

Weight Capacity

  • YPSI: 50 pounds per seat
  • DEMI Next: 50 pounds per seat

Seat Back Height

  • YPSI: 18”
  • DEMI Next: 18.5"

Seat to Canopy Height

  • YPSI: 22"
  • DEMI Next: 20.5"

Seat Width

  • YPSI: 12"
  • DEMI Next: 10.5" with wider insert and 12" without insert in

Seat Depth

  • YPSI: 9”
  • DEMI Next: 10.5"

Calf Support Length

  • YPSI: 11” - stationary and does not adjust like the Demi Grow
  • DEMI Next: 9.5"


Peg Perego YPSI vs. Nuna DEMI Next Warranty

• Peg Perego YPSI: 2 years

• Nuna DEMI Next: 2 years


Peg Perego YPSI vs. Nuna DEMI Next Double Stroller Configurations 

Both the YPSI and DEMI Next can expand from a single to a double stroller and can accommodate any combination of 1 or 2 stroller seats, 1 stroller seat and rider board, 1 or 2 bassinets, or 1 or 2 infant car seats. The YPSI can actually accommodate up to 3 children with an optional ride along board for an older child to stand on. The DEMI Next cannot hold 3 children as the rider board only works in single mode.

On the YPSI, the second seat attaches to the lower portion of the frame - stadium style. On the Nuna DEMI Next, the second seat attaches to connectors in the back of the basket so that the seat is positioned behind and beneath the primary seat - stacked style.

Both designs offer pros and cons.

Nuna Demi Grow and Peg-Perego YPSI double strollers

Seat Positioning

The advantage of the YPSI Double is that the basket space is not impacted with the addition of the second seat. However, the advantage of the Nuna DEMI Next Double is that the weight of both children is placed on the strongest part of the stroller, the rear axle, making it easier to push and steer than the longer YPSI Double.

The downsides of the DEMI Next design: The child essentially rides inside the stroller basket, which limits their view and movement—as well as your storage options. The second seat for the DEMI Next is also more difficult to access for the parent (although your child might think it's fun to climb in).


Both strollers offer numerous configurations for siblings or twins: You can add a second stroller seat, car seat or bassinet to either stroller.

But unlike the YPSI, both of which are reversible, the DEMI Next sibling seat (bottom seat) can only face forward.

Double Adapters

Adapters are needed to convert the YPSI from a single to double. The YPSI adapters are packaged together as a set of double adapters.

The YPSI double adapters—both upper and lower—are needed at all times in double mode, regardless of the configuration. The upper adapters can only be attached and removed when the stroller is folded, while the lower adapters snap onto the frame. The stroller can fold with upper and lower adapters attached.

No adapters are needed for the DEMI Next stroller seats. The stroller has built in adapters for both stroller seats and can be used from a double out of the box with one infant car seat or bassinet and one stroller seat. The stroller comes with two sets of car seat adapters.

Ride-Along Board

The YPSI can be a ride for three kids when you attach the Ride With Me Board to the stroller.

The DEMI Next comes with a rider board for an older sibling! However, it will not fit on the stroller in double mode so the DEMI Next is only for two children. 

Peg Perego YPSI Configurations

Peg-Perego YPSI Double stroller configurations


Nuna DEMI Next Configurations

DEMI Next configurations


Peg Perego YPSI vs. Nuna DEMI Next Bassinet

A bassinet is the coziest way for your baby to begin strolling: It allows your infant to lie flat, which is safest for her head and neck, and provides more airflow than a car seat. Both bassinets include a stand for your home.

Both the Peg Perego YPSI and Nuna DEMI Next have bassinet options that can be used on the stroller in either single or double mode, as well as on a bassinet stand for overnight sleeping in your home.

Your purchase of the DEMI Next bassinet, sold separately, includes a stand, which can be used in your home or by your bedside as baby's first crib. The DEMI Next Bassinet features a Sky Drape magnetic cover, additional ventilation panels integrated into siding near your baby's head for customized comfort, whatever the season, and non-slip feet for added security and fabric protection.

The YPSI Bassinet and Homestand includes ventilation inserts, a window and an extended apron that provides protection from the elements. Plus it includes a stand to bring baby to your bedside.

Bassinet Prices


Product image of YPSI bassinet and stand and DEMI Next bassinet and stand

Peg Perego YPSI vs. Nuna DEMI Next Fold

Both the Peg Perego YPSI and Nuna DEMI Next stand when folded, making the strollers easy to lift into the car. The YPSI is smaller when folded than the DEMI Next.

For both strollers (and most doubles), you'll need to remove the lower/bottom seat before folding.

How to Fold the Peg Perego YPSI

To fold the YPSI, first press the triggers on both sides of the top seat, then flip the seat over onto itself. Then, find the gray switch on the bar in the middle of the frame and pull it. The stroller will then fold in half. For the most compact fold, remove the YPSI seat before folding the stroller, then remove the upper adapters (which can only be detached when the stroller is folded).

How to Fold the Nuna DEMI Next


Watch how to fold the Nuna DEMI Next in this video:

Car Seats Compatible with Peg Perego YPSI vs. Nuna DEMI Next

The Peg Perego YPSI is compatible with infant car seats from Peg Perego as well as several other brands, allowing families to create a convenient travel system. You can attach a Peg Perego infant car seat directly to the stroller using adapters (which Peg Perego calls "links") that are included with purchase of the stroller.


Nuna is well-known for their Nuna PIPA model car seats. The Nuna DEMI Next is compatible with the Nuna PIPA series car seats, and the necessary car seat adapters are included with your stroller purchase. The DEMI Next comes with two sets of adapters - one ring adapter, and one set of post adapters. No other brand car seat will work with the DEMI Next.



Peg Perego YPSI vs. Nuna DEMI Next Colors

For current colors of the Peg Perego YPSI, click here.


Nuna products meet the standards for GREENGUARD GOLD certification. This means that they have been thoroughly tested and certified to meet stringent emissions standards for over 360 volatile organic compounds (VOCs) and chemical emissions.

For current colors of the DEMI Next, click here.


Peg Perego YPSI vs. Nuna DEMI Next Accessories

Sometimes convenient accessories makes or breaks it for the parents! The Peg Perego YPSI offers more accessories than the Nuna DEMI Next.

Peg Perego accessories sold separately for the YPSI include:

  • Travel bag
  • Universal cup holder
  • Ride-along board
  • Bassinet stand
  • Baby stage pad (infant insert)
  • Rain cover
  • Mosquito net
  • Parasol
  • Bassinet mattress cover
  • Snack tray


The DEMI Next comes with a rider board, a ring car seat adapter, traditional car seat adapters, fenders, and a rain cover. Other DEMI Next accessories sold separately include:

  • Bassinet and stand
  • Parent cup holder
  • Travel bag
  • Sling bag


Peg Perego YPSI vs. Nuna DEMI Next Pros and Cons

So which is better: the Peg Perego YPSI or the Nuna DEMI Next? Let's highlight the benefits and drawbacks of each.

Peg Perego YPSI


  • YPSI is the lightest convertible stroller on the market
  • Less expensive than the DEMI Next
  • Just 20” wide - 4” less wide than the DEMI Next - making maneuvering thru crowded places easier 
  • More accessories offered such as a snack tray 
  • Smaller when folded


  • Requires double adapters (on both upper and lower positions) for all double configurations
  • Stroller has to be folded in order to attach and remove upper adapters
  • Footrest does not adjust to multiple positions (although seat fabric pops out to elevate seat) 

Peg-Perego YPSI Double Stroller

Nuna DEMI Next


  • Stacked design of double stroller offers improved maneuverability and a reduced length
  • Seat includes insert that can be unzipped for a mesh seatback
  • Aire Protect canopy has built in bug cover and more mesh windows
  • Sky Drape cover extends from the canopy for full sun coverage over the seat
  • Does not require additional adapters to convert to double stroller
  • Harness buckle is magnetic, making it easier to help your child in and out


  • Basket space is minimized when child is riding in lower position
  • Some toddlers may not like riding underneath the upper seat
  • Seat in lower position is not reversible and can only face forward
  • Stroller is larger and heavier than the YPSI
  • Not compatible with car seats other than Nuna brand
  • Rider board is not compatible in double mode for a third child
  • More expensive than the YPSI 
Couple walking their children in double Nuna DEMI Next


Strolleria is a family-owned and operated retailer dedicated to making the baby gear buying experience less overwhelming for parents. If you have questions about the Peg Perego YPSI or Nuna DEMI Next feel free to contact us at customercare@strolleria.com or chat with us today!