west elm x pbk Modern 4-in-1 Convertible Crib

  • Fair Trade
$1,499 $1,949
  • GREENGUARD Gold Certified
  • Unlimited Flat Rate Delivery

Our west elm x pbk Modern 4-in-1 Convertible Crib boasts a modern, sleek style and grows with them from baby to big-kid. Each piece is made in a Fair Trade Certified™ facility, complete with child-safe, water-based finishes. Featuring two platform height options, this crib grows with your baby and can be converted into a cozy toddler bed with the matching conversion kit (sold separately).


Modern 4-in-1 Convertible Crib
  • Expertly crafted from solid poplar wood, ash wood, medium density fibreboard and engineered wood.
  • Finished in a child-safe and water-based paint; choose from White or Pecan (both sold separately).
  • Mattress platform is crafted of metal and has two height options to accommodate your growing baby.
  • Platform can be adjusted to the following heights: 9.75" lowest; 18.5" highest
Pottery Barn Kids Lullaby 2-Stage Crib Mattress
  • Durable reinforced seam and fabric bindings offer long-lasting performance.
  • 120 interlocking coils provide optimal support.
  • Natural cotton wrap, sleep firm layers and thermo-bonded polyester layers.
  • Mattress edge has a reinforced border wire and Innofoam corner wraps.
  • Two-in-one design features a firm surface for infants on one side and a foam-cushioned surface on the other side for toddlers.
  • Each side features a distinct design: The infant side is grey with wihite moons and stars; toddler side is white with grey moons and stars.
  • Toddler side has convoluted foam comfort layer.
  • Vinyl mattress surface is waterproof and easy to keep clean.
Beautyrest® Supreme 2-Stage Crib Mattress
  • Mattress is supported with 231 Beautyrest® pocketed coil® springs.
  • Natural cotton wrap, sleep firm layers and thermo-bonded polyester layers provide additional support.
  • Mattress edge has a reinforced border wire and Innofoam corner wraps.
  • Toddler side has convoluted foam comfort layer.
  • 2 in 1 Design: The infant side provides a supportive sleeping surface while the toddler side features a layer of convoluted foam designed to provide a combination of comfort and support for active toddlers.
  • Woven fabric cover has a waterproof backing and is phthalate compliant.
Sustainability Certificates
  • Crib is made in a Fair Trade Certified™ facility.
  • Crib and mattresses are GREENGUARD Gold Certified. Meets or exceeds stringent chemical emissions standards.
  • All foams in crib mattresses are CertiPUR-US® certified which certifies the foams are made without PBDE flame retardants, mercury, lead and other heavy metals.
  • Natural cotton fire protection meets or exceeds the highest industry safety standards; complies with U.S. and Canadian crib mattress regulations.


  • Easily adapts from crib to cozy toddler bed or full size bed (Conversion Kits are sold separately).
  • When purchasing a crib and it is strongly recommended to purchase the conversion kit at the same time.
  • Double-size conversion kit includes siderails and slats.
  • We offer a variety of crib mattresses so you can choose the right one for your baby. All the crib mattresses we offer are compatible with all our standard cribs.


  • Pottery Barn Kids and West Elm exclusive collaboration.
  • All Pottery Barn Kids juvenile products are tested at 3rd party CPSC accredited labs to meet or exceed all industry voluntarily and regulatory safety requirements.
  • Imported.
  • Assembly required if Standard UPS delivery is selected.
  • This crib may be used until your child can easily climb out or is taller than 35 in. (89cm).


    WE/PK Modern 4-in-1 crib converts in the following options:

  • (1) Crib.
  • (2) Toddler bed (conversion kit sold separately).
  • (3) Double-sized bed with headboard only (metal bed frame sold separately).
  • (4) Double-sized complete bed with headboard and footboard and siderails (full bed conversion kit sold separately).
Dimensions & Care


  • Overall: 31" wide x 55.5" long x 43.5" high
  • End Panels: 27" wide x 28.5" high x 1.25" thick
  • Back Panel: 55.5" long x 43.5" high x 2" thick
  • Front Panel: 55.5" long x 28.5" high x 2" thick
  • Mattress Platform: 51.25" wide x 27" deep x 1" thick
  • Legs: 54.5" long x 8.75" high x 1.75" thick
  • Distance between slats: 2"
  • Weight: 90.75 pounds
Toddler Conversion Kit
  • Overall: 55.5" long x 28.5" high x 2" thick
  • Guardrail Opening: 20" wide x 28.5" high
  • Weight: 9 pounds
Double Size Bed Conversion Kit
  • Overall Assembled: 55.5" wide x 78" long x 43.5" high
  • Mattress Platform: 53" wide x 75" long
  • Siderails: 75" long x 6" wide x 1" thick
  • Slats: 2" wide x 53.5" long x 1" thick
  • Distance from top of slats to floor: 11.25" high
  • Distance from top of slats to top of side rail: 3.75" high
  • Number of Slats: 12
  • Weight: 52 pounds
Lullaby® Crib Mattress
  • Overall: 27.5" wide x 52" long
  • Thickness: 6"
  • Weight: 18 pounds
Lullaby® Supreme Crib Mattress
  • Overall: 52" x 27.5" x no more than 6" thick
  • Weight: 27 pounds


Crib & Conversion Kit
  • Dust wood frame often using a clean, soft, dry cloth.
  • Blot spills immediately, and wipe with a clean, damp cloth.
  • We do not recommend the use of chemical cleansers, abrasives or furniture polish.
  • Parents should ensure a safe environment for the child by checking regularly to see that every component is properly fastened and securely in place.
  • Do not over-tighten fasteners, as this may cause distortion or breakage.
  • Carefully package all original hardware to protect from loss or damage.
  • Store assembly instructions for future reference.
Crib Mattresses
  • Spot clean using mild soap and a damp cloth.
  • Blot to remove excess water.
  • Air dry thoroughly.
Shipping & Returns


Standard Parcel Shipping with Front Door Delivery

Smaller items are shipped using our Standard Parcel service, and delivered by Canada Post or Purolator. Items ordered together may not arrive in the same box. If your package cannot be delivered, you will receive a notice from the carrier with pick-up instructions or re-delivery options.

Unlimited Flat Rate Shipping with In-Home Delivery & Assembly

An unlimited number of eligible furniture items can be delivered for a single flat rate, per shipping address. These items will be delivered by our In-Home Delivery & Assembly service provider where items are brought into your home, unpacked and assembled (some exclusions apply) and the packaging is responsibly removed.

Eligible items will show "Unlimited Flat Rate Delivery" on the product page.

The exact shipping charge is based on your location, and delivery times vary based on item availability. For more details, please see our Shipping page.


If you’re not 100% satisfied with your purchase, we’re here to help.

Eligible items can be exchanged for a refund of the merchandise value within 30 days of receiving an order or 7 days for Quick Ship upholstery items.

We will issue a refund in the form of the original payment or with a gift card. Please note that shipping charges are non-refundable.

Non-Returnable Items
  • Made-to-order furniture
  • Personalized or monogrammed items
  • Used or soiled items
  • Mattresses
  • Final Sale items ending in .99 or .97
  • Gift cards
How to Begin a Return

Online Purchases:  Our customer care associates are ready to help, please call 855-860-1080 or visit your local store to make a return. For oversized items and quick-ship furniture, please call us for more details.

In-Store Purchases:  Please visit your local store to make a return. An original receipt or gift receipt is required—our stores will not accept returns or exchanges without a receipt or proof of purchase.

Some restrictions apply, see our full Returns Policy.

Our Safety and Quality Commitment

Our Commitment

At Pottery Barn Kids, we have a firm commitment to safety and quality. We take great pride in our timeless designs, sustainable sourcing, premium materials and expert craftsmanship.

Lead Testing

One of the most important tests for developing infants and children. We require extensive lead testing at both surface and substrate levels to ensure that our products exceed both those levels achieving higher than industry standards in many countries.

Anti-Tip Testing

We test our furniture to prevent tip over hazards, testing above the required standards. In addition we provide anti-tip kits with all our furniture for added protection. We also put our anti-tip kits through multiple tests to ensure they will safely support and secure your new furniture in your home.

Global Safety Standards Acumen

Since quality and safety standards can change from place to place, we aggregate the highest safety standards from the many countries and nations we do business with to holistically develop our own global standards for our many products. Our quality teams attend regular ASTM meetings and conferences to stay ahead of industry trends.

Thinking as Designers and Engineers First

We design safety requirements into our products like no sharp edges & points, small parts, finger or head entrapment hazards as a foundation for our furniture and other products. We source high-quality materials and substrates in our products especially for our loft and bunk bed furniture so your children can sleep safely.

3rd Party CPSC-Nominated Testing Partners

We stand by each product and test in our name for accountability. We use accredited 3rd party labs nominated and regulated by the CPSC (Consumer Product Safety Commission). Our partners test everything in the box, including labels, packaging and materials to ensure product safety compliance.

Your Opinion Matters

We review all returns and take customer feedback very seriously. Many of us at Pottery Barn Kids are parents ourselves and listen to your feedback to make better and safer products for healthier homes.

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