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Delta Children

Delta Children Serta SleepTrue Mini Crib Mattress, Premium Sustainably Sourced Fiber Core, Hypoallergenic & Waterproof Cover, Greenguard Gold Certified - Made in USA, White

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Aug 8
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Features

  • FITS MOST MINI & PORTABLE CRIBS: This crib mattress fits most mini cribs and portable cribs; mattress measures 38"L x 24"W x 4"H (not designed for standard cribs or pack 'n plays) | Measure your crib first to ensure a perfect fit.General Note: Please allow 24 - 72 hours for your Mattress to regain its full shape. Any memory foam will expand faster in a warmer room. In cold temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding
  • IDEAL SUPPORT FOR BABY: This mini crib baby mattress features a premium sustainably sourced firm fiber core made from upcycled plastic bottles for a healthier, longer sleep for your baby| Non-toxic construction is free from harmful materials/chemicals
  • WATERPROOF DESIGN IS EASY TO CLEAN: Features a durable, waterproof vinyl cover that wipes clean and is hypoallergenic
  • SAFETY CERTIFICATIONS: GREENGUARD Gold certified: recognizes products with low chemical emissions, contributing to healthier environments | Meets or exceeds flammability, lead, phthalate and CPSIA testing and does not contain toxic fire retardants
  • TRUSTED BRAND: Trusted 10 Year Warranty

Description

Create the ultimate Sanctuary for your little one with Serta Sleep true 4-inch mini crib mattress. Designed to fit most mini or portable cribs, This baby mattress delivers all the benefits of a full-sized crib mattress in a scaled- down size

Item Firmness Description: Firm


Number of Layers: 2


Additional Features: Fire Retardant, Hypoallergenic, Stain Resistant, Water Resistant


Mattress Coil Type: Continuous Coil


Construction Type: Fiber Core


Is Customizable?: No


Mattress Base Compatibility: Mini Crib


Portable: Yes


Is Foldable: No


Brand Name: Delta Children


Model Name: Sleeptrue


Product Benefits: Comfortable, Easy to Maintain, Hypoallergenic


Model Number: M70407-1119-NO


UPC: 761139038561


Global Trade Identification Number: 61


Manufacturer Warranty Description: 1 year manufacturer.


Manufacturer Part Number: M70407-1119


Unit Count: 1.0 Count


Included Components: Mattress


Age Range Description: Kid


Item Type Name: SleepTrue 4-Inch Mini Crib Mattress


Size: 38x24x4 Inch (Pack of 1)


Item Dimensions L x W x Thickness: 38"L x 24"W x 4"Th


Item Weight: 3.9 Pounds


Item Dimensions: 38 x 24 x 4 inches


Item Depth: 4 inches


Cover Material: Vinyl


Fill Material: Recycled Polyester Fiber


Mattress Comfort Layer Material: Memory foam


Material Type: Vinyl


top-style: Tight Top


Color: White


Shape: Round


Style Name: Mattress


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 8

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Perfect mattress for mini crib!
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
We bought this for my daughter for her mini crib, we were a bit tight on space in our apartment and had to purchase something smaller. Overall it’s a great product for the price, it doesn’t make any noise when putting down the baby, it’s soft and has great support. We also use this whenever we need to go on trips because it fits perfectly into our pack and play, it’s quite durable! It has many uses, happy we purchased it. ... show more
Reviewed in the United States on September 22, 2024 by Daniel
    • Best mini crib mattress
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
This is the second time I purchase this mattress for my twin boys. The first time was before they were born two years ago. I bought them again because they still use their mini cribs as a toddler bed and just needed new ones because they put the first ones through it all. They are water proof and do resist a lot. My boys would dump their milk on purpose as well as remove diapers or have super heavy leaks because they would tug on their diaper. I highly recommend these mattresses ... show more
Reviewed in the United States on November 30, 2025 by Diana Reyes
    • Great quality and safe!
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
This fit great with the mini crib we chose, and the quality is great in the sense that it does not “feel” cheaply made and it is firm to use for newborn baby and even up until now (she is 2 years old now). It is also easy to clean after accidents, and easy to put on/off mini crib size sheets. Great mattress overall! ... show more
Reviewed in the United States on December 26, 2024 by Danielle C
    • Delta & Serta always provide quality products!
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
We are beyond thrilled for our new delta mini crib Serta mattress. Our coming baby will be our 4th child & while we are transitioning into a bigger home we were challenged to figure out new sleeping arrangements. We discovered the option of a mini crib & when it came to quality we new delta would provide for not just a crib but an mattress too! We started our parenting journey 10 years ago with the purchase of a delta crib that has made its way though our 3 older children & still in great shape, just larger than we can currently use. We love the comfort, firmness & safety this 4inch mattress gives, along with the fact that it’s water proof and even made from recycled bottles. We can’t wait to bring our baby home! ... show more
Reviewed in the United States on March 19, 2020 by graceebishop
    • sturdy.
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
i’m not sure how to feel about this mattress. it’s soft but hard at the same time. i sometimes feel like it’s too hard for my baby, but he sleeps through the night just fine on it so i might just be an overthinking mom at this point. i’m not sure if i’d buy again but it’s a good quality mattress.
Reviewed in the United States on June 8, 2023 by karla garcia
    • Safe and comfortable
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
I didn’t want a thin matress for my baby I love that it is wipe down for those days they are sick it makes it so much easier you just get a new sheet and a Clorox wipe and your ready to go it fit my mini crib perfectly it’s not crinkly sounding like most and she doesn’t sweat a lot on it (she sleeps hot) the only thing I could think about is if your little one gets out of the crib easily maybe go for something thinnner because she does get out of her crib due to the height of the matress ... show more
Reviewed in the United States on November 28, 2023 by Alia Gonzalez
    • For mini crib
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
Great addition to the mini crib.
Reviewed in the United States on April 26, 2026 by Urnot4go10
    • Good mattress, be careful of what sheets you buy!
Size: 38x24x4 Inch (Pack of 1) Style: Mattress
These mattresses are a good value. Word of caution - finding mini crib sheets that fit this 4" mattress can be difficult. I found that the muslin Babyletto fit okay, while the Little Sleepies Mini Crib sheets fit perfectly. The KeaBabies mini crib did NOT fit even though the dimensions seemed to work. Hope this helps another caregiver! ... show more
Reviewed in the United States on March 27, 2026 by Sam B.

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