Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress

The Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress weighs 11.5 lb and is 5 in thick, per Safety 1st. A firm fiber core mattress with a removable machine washable cover and a long warranty.

  • 5 inThickness
  • 11.5 lbWeight
  • FiberCore

All single-sided crib mattresses

How the Heavenly Dreams Supreme Firm Baby Crib Mattress stacks up

Against the 42 single-sided crib mattresses we track. The shaded band is where the middle half of them fall; the dot is this one.

Weight11.5 lb27th lightest of 33

Above the typical range for single-sided crib mattresses (7 lb to 10.9 lb).

This one
3.5 lbmiddle 8.5 lb26 lb
Thickness5 in

Within the typical range for single-sided crib mattresses (5 in to 5.1 in).

This one
4 inmiddle 5 in6 in

What sets the Heavenly Dreams Supreme Firm Baby Crib Mattress apart

Measured against the 42 single-sided crib mattresses we compare, from each maker's published specs.

  • Weight: 11.5 lbabove the middle half of the 33 single-sided crib mattresses that publish it (7 lb to 10.9 lb)

Next to its closest matches

Fit check

Size, per the maker52 × 27.5 × 5 in

Crib types on Cribpicks that take a full-size crib mattress:

Listed features

  • Removable machine washable cover
  • 15 year warranty
  • Moderate weight

Where to buy the Heavenly Dreams Supreme Firm Baby Crib Mattress

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good to know
  • Check for recalls: Search the agency's recall list with the model number and date code from the label: CPSC recall search.
  • Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress
TypeCrib mattress
Size52 × 27.5 × 5 in
Thickness5 in
Weight11.5 lb
CoreFiber: thermo-bonded wool, cotton and polyester
Washable coverYes
CertificationsGREENGUARD Gold
Warranty15 years, limited

Compare the Heavenly Dreams Supreme Firm Baby Crib Mattress with

How each closest rival differs from the Heavenly Dreams Supreme Firm Baby Crib Mattress, from the makers' specs.

Ask the meadow

Heavenly Dreams Supreme Firm Baby Crib Mattress: questions answered

From Safety 1st's published specs, last checked 2026-11-02.

Will the Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress fit my crib?

The maker lists it at 52 × 27.5 × 5 in, a full-size crib mattress. Check that the mattress size matches what your crib's maker specifies. Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.

What is the Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress made of?

Thermo-bonded wool, cotton and polyester. The maker lists GREENGUARD Gold. It weighs 11.5 lb, which matters when you change sheets.

Is the Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress waterproof or washable?

It has a removable, machine-washable cover.

What's the difference between the Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress and the Evolur Customized Premium Breathable Crib & Toddler Bed Mattress?

By the maker specs, the Customized Premium Breathable Crib & Toddler Bed Mattress is lighter (10 vs 11.5 lb). See them side by side.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

More single-sided crib mattresses

Where these specs come from

Last checked 2026-11-02. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.