Skip to Main Content Skip to Footer
  • (Opens in new window)
  • (Opens in new window)
Limited Time: Up to 24 months special financing*** on qualifying purchases with a Crate & Barrel credit card.
    Orders &
    • Track Orders / Schedule Delivery
    • Create a Registry
    • Crate & Barrel Credit Card
    Store Locations
    • Shipping to 
    Favorites0items

    Something catch your eye?

    1. Save it to Favorites

    2. Create a Mood Board

    3. See it all together

    FavoritesView Favorites
    Cart contains0items

    Are you missing items in your cart?

    to see items you may have added using another computer or device.

    View Cart
    • NEW!
    • Baby Registry
    • Free Design Services
    • Business & Trade Program
    • Shop by Room
    • HALLOWEEN
    • Back to School
    • LABOR DAY SALE
    • Baby
    • Kids
    • Furniture
    • Bedding & Bath
    • Decor & Mirrors
    • Rugs
    • Lighting
    • Toys
    • Storage
    • Baby Gear
    • Backpacks & Lunch
    • Gifts
    • Sale
    Earn 10% 20% Back in Reward Dollars* Limited Time Only
    Up to 60% off Labor Day Event Starts Now!
    Up to 40% off Bestselling Furniture Limited Time Only
    Up to 60% off Kids & Baby Bedding + Free Shipping

    Nuna ® DEMI ™ grow Black Caviar Sibling Seat for DEMI ™ grow Stroller

    SKU: 553655
    Nuna ® DEMI ™ grow Black Caviar Sibling Seat for DEMI ™ grow Stroller
    Carousel showing item 1 through 1 of 2
    View Nuna ® DEMI ™ grow Black Caviar Sibling Seat for DEMI ™ grow Stroller - image 1 of 2
    View Nuna ® DEMI ™ grow Black Caviar Sibling Seat for DEMI ™ grow Stroller - image 2 of 2

    Nuna ® DEMI ™ grow Black Caviar Sibling Seat for DEMI ™ grow Stroller

    SKU: 553655
    This item is no longer available.
    Shop Similar Products
    • Nuna ® SENA ™ aire Biscotti Brown Baby Playard, Travel Crib and Changing Table

      Nuna ® SENA ™ aire Biscotti Brown Baby Playard, Travel Crib and Changing Table

      $500.00
    • Nuna ® LUMN ™ Granite Grey Reclining Car Seat

      Nuna ® LUMN ™ Granite Grey Reclining Car Seat

      $700.00
    • Nuna ® RAVA ™ Caviar Black Convertible Baby Car Seat

      Nuna ® RAVA ™ Caviar Black Convertible Baby Car Seat

      $680.00
    • Nuna ® PIPA ™ aire rx Caviar Black Reclining Baby Car Seat + MIXX ™ next Stroller Travel System

      Nuna ® PIPA ™ aire rx Caviar Black Reclining Baby Car Seat + MIXX ™ next Stroller Travel System

      $1,650.00
    • Nuna ® PIPA ™ rx Cedar Brown Reclining Infant Car Seat + PIPA RELX ™ Base

      Nuna ® PIPA ™ rx Cedar Brown Reclining Infant Car Seat + PIPA RELX ™ Base

      $550.00
    • Doona ™ Nitro Black Compact Infant Car Seat & Stroller with Base

      Doona ™ Nitro Black Compact Infant Car Seat & Stroller with Base

      $600.00
    • Nuna ® RAVA ™ Cedar Tan Convertible Baby Car Seat

      Nuna ® RAVA ™ Cedar Tan Convertible Baby Car Seat

      $680.00
    • Nuna PIPA ™ rx Caviar Black Reclining Infant Car Seat + PIPA RELX Base

      Nuna PIPA ™ rx Caviar Black Reclining Infant Car Seat + PIPA RELX Base

      $550.00
    • Doona ™ Baby Car Seat Snap-On Storage Bag

      Doona ™ Baby Car Seat Snap-On Storage Bag

      $40.00
    • Nuna PIPA ™ aire rx Caviar Black Reclining Infant Car Seat + PIPA RELX Base

      Nuna PIPA ™ aire rx Caviar Black Reclining Infant Car Seat + PIPA RELX Base

      $650.00

    The perfect accessory for growing families, the Nuna DEMI Sibling Seat allows you to easily transform your single Nuna DEMI grow stroller into a double stroller without compromising style or functionality. Crafted from premium materials, this sleek black add-on seat has an easy-to-use harness system that keeps little ones securely fastened with a self-guiding magnetic buckle. The rugged, all-season seat features a one-hand, three-position recline plus adjustable calf support to keep kids comfortable. A removable zip-to-extend protective UPF 50+ canopy shields riders from sun and wind, while the Sky drape ™ mesh canopy cover offers added protection from the elements. Suitable for babies and big kids alike, this seat's simple and innovative design makes it easy to stroll as a traveling twosome.

    •Polyester and merino wool seat
    •Metal and plastic frame
    •Leatherette-wrapped arm bar
    •Self-guiding magnetic buckle automatically locks into place
    •Sky drape™ provides extra protection from elements
    •UPF 50+ canopy with flip-out eyeshade
    •Three- or five-point no-rethread harness
    •One-hand, three-position reclining backrest
    •One-hand adjustable calf support
    •Rotating and removable arm bar
    •Suitable up to 50 lbs.
    •Machine wash removable fabrics in cold water on delicate cycle
    •Do not bleach, tumble dry, dry clean or iron
    •Clean frame, plastic parts and any non-removable fabric with a damp cloth; do not use abrasive cleaners, silicone lubricants or bleach
    •Do not store in a damp place
    •Use with DEMI grow stroller only (not included)
    Nuna ® DEMI ™ grow Black Caviar Sibling Seat for DEMI ™ grow Stroller36.5"Hheight16.5"Wwidth9"DdepthMeasurements are in inches.

    • Do not dry clean.
    • Do not bleach.
    • Do not iron.
    • Do not tumble dry.
    Reviews
    Customers who write reviews are automatically entered for a chance to win a gift card. More information on how to enter sweepstakes.
    • Orders

      Find out when your purchase will arrive or schedule a delivery.

      Track OrderSchedule Delivery
    • Contact Us & Store Locator

      Questions? Text us:  (312) 779-1979

      Find a Store
    • Crate & Barrel Credit Card

      Earn Reward Dollars every time you shop* (excluding special financing purchases), plus get access to special offers and events.

      Apply NowManage Your Account
    • Our iOS App

      Scan to shop exclusive first looks, get personalized alerts and manage your registry faster and easier than ever before. (Opens in new window)

      QR Code

      Our iOS App

      Shop exclusive first looks, get personalized alerts and manage your registry faster and easier than ever before.

      (Opens in new window)

    Help

    • Customer Service
    • Return Policy
    • Shipping Information
    • Product Recalls
    • Email & Text Preferences
    • Sign Up for Texts

    Resources

    • Free Design Services
    • Wedding Registry
    • Baby Registry
    • Gift Cards
    • Trade Program
    • Contract Grade Furniture

    Our Company

    • About Us
    • Careers (Opens in new window)
    • Responsible Design
    • Accessibility Statement

    Show us your look with:

    • #CrateStyle
    • #CrateKidsStyle
    • (Opens in new window)
    • (Opens in new window)
    • (Opens in new window)
    • (Opens in new window)
    • (Opens in new window)

    Our Brands

    • (Opens in new window)
    • (Opens in new window)
    • Terms of Use
    • Privacy
    • Site Index
    • Ad Choices
    • CA Supply Chains Act
    • Do Not Sell or Share My Personal Information (Opens in new window)
    • *Credit Card Terms

    ©2025 All rights reserved. If you are using a screen reader and are having problems using this website, please call (800) 967-6696 for assistance.

    Modal Popup