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Sealy Baby Butterfly Waterproof Crib and Toddler Mattress

The Sealy Baby Butterfly Waterproof Crib and Toddler Mattress weighs 7 lb and is 4.5 in thick, per Sealy Baby (Kolcraft). A light all-foam crib mattress with a waterproof barrier and laminate cover that zips on and off, wiped clean with a damp cloth.

Made in the USA, per the maker “Made in USA and globally sourced materials” Source

  • $109.99List price
  • 4.5 inThickness
  • 7 lbWeight
  • FoamCore
See it on Sealy Baby (Kolcraft)'s site

All two-stage crib mattresses

How the Butterfly Waterproof stacks up

Against the 82 two-stage crib mattresses we track. The shaded band is where the middle half of them fall; the dot is this one.

Weight7 lb14th lightest of 69

Below the typical range for two-stage crib mattresses (7.5 lb to 14 lb).

This one
3.5 lbmiddle 10.6 lb36 lb
Thickness4.5 in

Below the typical range for two-stage crib mattresses (5 in to 6 in).

This one
4 inmiddle 5.5 in6 in
Price$109.9928th lowest price of 79

Within the typical range for two-stage crib mattresses ($89.99 to $189.99).

This one
$44.99middle $129.99$799

What sets the Butterfly Waterproof apart

Measured against the 82 two-stage crib mattresses we compare, from each maker's published specs.

  • 14th lightestof the 69 two-stage crib mattresses with it published: 7 lb

Next to its closest matches

Fit check

Size, per the maker52 × 28 × 4.5 in
SidesTwo-stage, per the maker

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

Listed features

  • Waterproof barrier cover
  • Low price
  • Light at 7 lb

Worth checking

  • Not described as two-stage
  • Cover cleaned by spot or wipe only
  • Thin at 4.5 in

Where to buy the Butterfly Waterproof

Prices and availability change. We may earn a commission from some links.

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

Sealy Baby (Kolcraft) Butterfly Waterproof
TypeTwo-stage crib mattress
List price$109.99
Size52 × 28 × 4.5 in
Thickness4.5 in
Weight7 lb
CoreFoam
Two-stageYes, infant and toddler sides
WaterproofYes
CertificationsGREENGUARD Gold, CertiPUR-US
Warranty7 years on workmanship and materials

Compare the Butterfly Waterproof with

How each closest rival differs from the Butterfly Waterproof, from the makers' specs.

Ask the meadow

Butterfly Waterproof: questions answered

From Sealy Baby (Kolcraft)'s published specs, last checked 2026-11-02.

Will the Sealy Baby Butterfly Waterproof Crib and Toddler Mattress fit my crib?

The maker lists it at 52 × 28 × 4.5 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.

How does a two-stage mattress like the Sealy Baby Butterfly Waterproof Crib and Toddler Mattress work?

One side is firmer for infants and the other is softer for toddlers. Follow the maker's instructions on when to switch sides. 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 Sealy Baby Butterfly Waterproof Crib and Toddler Mattress made of?

A foam core. The maker lists GREENGUARD Gold, CertiPUR-US. It weighs 7 lb, which matters when you change sheets.

Is the Sealy Baby Butterfly Waterproof Crib and Toddler Mattress waterproof or washable?

The maker says it has a waterproof surface or cover.

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

More two-stage 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.