We compared specs and owner reviews to rank the 33 x 19 bassinet mattresses. The Newton Baby Crib Mattress wins overall for its breathable, washable design. For budget, the Milliard Premium is a solid alternative.
Finding the right 33 x 19 bassinet mattress is crucial for your baby’s sleep safety and comfort. Our editorial research team analyzed specifications, certifications, and aggregated owner reviews to identify the top options in 2026. We focused on firmness, breathability, ease of cleaning, and safety certifications like CertiPUR-US and OEKO-TEX.
We ranked each mattress based on reported owner satisfaction, durability, and value. While we don’t physically test products, we evaluate materials and construction to recommend mattresses that provide a safe sleep surface for infants. Below are our top 7 picks for 33 x 19 bassinet mattresses.
Newton Baby Crib Mattress
The Newton Baby Crib Mattress features a breathable core that allows maximum airflow, reducing the risk of SIDS. It is fully washable and comes in a 33 x 19 size for bassinets. Owners appreciate its firmness and non-toxic materials.
How we research and rank
We do not take payment for placement and we do not physically test products. Rankings come from manufacturer specifications, material certifications (CertiPUR-US foam, OEKO-TEX textiles), and thousands of aggregated owner reviews analyzed for durability, heat retention and sagging.
The picks, compared
Newton Baby Crib Mattress
Newborns requiring a breathable, easy-to-clean mattress · Type: Foam | Firmness: Firm | Trial: 100 days
The Newton Baby Crib Mattress features a breathable core that allows maximum airflow, reducing the risk of SIDS. It is fully washable and comes in a 33 x 19 size for bassinets. Owners appreciate its firmness and non-toxic materials.
What owners report: Owners report that the mattress holds up well over time and is easy to clean after accidents. Many note their babies sleep soundly and love the breathability.
- Breathable and washable
- Non-toxic with CertiPUR-US and GREENGUARD Gold
- Excellent firmness for safety
- Expensive compared to others
- May be too firm for some babies
Milliard Premium Bassinet Mattress
Budget-conscious parents who want quality without high cost · Type: Foam | Firmness: Firm | Trial: 30 days
The Milliard Premium Bassinet Mattress offers a firm, supportive surface at an affordable price. It is made from CertiPUR-US certified foam and has a smooth, easy-to-clean cover. Owners report it fits standard bassinets perfectly.
What owners report: Owners frequently mention the mattress is comfortable for babies and a great value for the price. Some note it has held up well after months of use.
- Great price point
- CertiPUR-US certified foam
- Firm support
- Cover is not removable
- May have slight odor initially
Sealy Soybean Foam Bassinet Mattress
Babies who tend to overheat during sleep · Type: Foam | Firmness: Firm | Trial: 30 days
The Sealy Soybean Foam Bassinet Mattress is infused with soybean oil and features a moisture-wicking cover to help regulate temperature. It is GREENGUARD Gold and CertiPUR-US certified. Owners report it sleeps cool and is comfortable.
What owners report: Owners often praise the cooling properties, noting their babies stay dry and comfortable. Some wish the cover was machine washable.
- Cooling cover reduces heat
- Eco-friendly soy foam
- Firm and supportive
- Cover is water-resistant but not washable
- Some may find it thin
Dourxi 33 x 19 Bassinet Mattress
Parents looking for an ultra-firm surface that reduces roll risk · Type: Foam | Firmness: Very Firm | Trial: 30 days
The Dourxi Bassinet Mattress is designed with extra firmness to reduce the risk of rollover. It features a waterproof cover and a dense foam core. Owners report it fits snugly and helps babies stay on their back.
What owners report: Owners with side-sleeping babies appreciate the firmness and find it helps maintain safe sleep positions. Some mention it is a bit heavy.
- Extra firm for safety
- Waterproof cover
- Good fit in standard bassinets
- Cover is not removable
- Might be too hard for some
Dream On Me Spring 33 x 19 Bassinet Mattress
Extremely budget-limited parents needing a basic mattress · Type: Innerspring | Firmness: Firm | Trial: 30 days
The Dream On Me Spring Bassinet Mattress is an innerspring option with a firm sleeping surface. It is lightweight and easy to move, and it meets federal safety standards. Owners report it works well for short-term use.
What owners report: Owners often mention it's a good basic mattress for the price, but some note it may not be as durable as foam options.
- Very low cost
- Lightweight
- Firm safety support
- Not as durable
- No certifications
- Thin padding
Safety 1st Heavenly Dreams Bassinet Mattress
Parents prioritizing maximum firmness for SIDS prevention · Type: Foam | Firmness: Extra Firm | Trial: 30 days
The Safety 1st Heavenly Dreams Bassinet Mattress is extra firm and features a waterproof cover. It is GREENGUARD Gold certified and fits standard bassinets. Owners appreciate the firm, flat surface.
What owners report: Owners report it is very firm and helps babies stay on their back. Some mention it can be difficult to fit sheets over the thick cover.
- Extra firm for safety
- Waterproof and easy to clean
- GREENGUARD Gold certified
- Cover may be less breathable
- Thick design may not fit all bassinets
Graco Premium Foam Bassinet Mattress
Parents wanting a dual-sided mattress with firm and soft options · Type: Foam | Firmness: Dual (Firm/Soft) | Trial: 30 days
The Graco Premium Foam Bassinet Mattress is a reversible design: one side firm for infants, the other softer for toddlers. It has a waterproof cover and is CertiPUR-US certified. Owners like the versatility for growing babies.
What owners report: Owners appreciate the two-sided design, extending the mattress's life. Some note the softer side may not be firm enough for very young infants.
- Reversible for longer use
- Waterproof cover
- Good value
- Softer side not for newborns
- May not fit all bassinets perfectly
Frequently asked questions
What is the safest firmness for a 33 x 19 bassinet mattress?
The safest firmness is a firm, flat surface that does not conform to the baby's head. A firm mattress reduces the risk of SIDS and suffocation. Look for mattresses labeled 'extra firm' or 'ultra firm' that meet safety standards.
How do I clean a bassinet mattress?
Most bassinet mattresses have waterproof covers that can be wiped clean. Some have removable, machine-washable covers. Always follow the manufacturer's instructions. For spot cleaning, use mild soap and water.
What certifications should I look for?
Key certifications include CertiPUR-US for foam safety, GREENGUARD Gold for low chemical emissions, and OEKO-TEX for fabric safety. These ensure the mattress is free from harmful substances.
Can I use a standard crib mattress in a bassinet?
No, standard crib mattresses (usually 28 x 52 inches) are too large for a bassinet. A 33 x 19 mattress is specifically designed to fit bassinets snugly, preventing gaps that could pose a suffocation risk.
How often should I replace a bassinet mattress?
Replace the mattress when it shows signs of wear, such as sagging, stains, or tears. Typically, it lasts for one baby. If passed down, ensure it remains firm and clean. Always check for recalls.
The verdict
After comparing specs, certifications, and owner reviews, the Newton Baby Crib Mattress is our top pick for its breathability, safety certifications, and easy cleaning. For budget-conscious parents, the Milliard Premium Bassinet Mattress offers great value without sacrificing firmness. If cooling is a priority, the Sealy Soybean Foam Mattress helps regulate temperature.
