As part of your nursery shopping expedition, it is essential that you select a crib mattress which fits securely within the crib. Any gaps between it and the crib could result in injuries such as entrapment or suffocation for infants.

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Some mattresses feature dual sides for convenient transitioning at different stages in a baby's development, known as two-stage, dual firm or convertible crib mattresses.

Size

Size matters when purchasing a crib mattress for your baby or toddler. They must fit comfortably, while also being safe enough for infants or toddlers.

A typical baby mattress will typically measure 27 inches wide by 51 5/8 inches long and must meet ASTM safety regulations, fitting snugly within its crib without leaving more than an inch gap between it and the crib sides to avoid entrapment and suffocation risks.

Foam and innerspring crib mattresses provide two options to consider for selecting a crib mattress. Foam options tend to be lighter and cheaper, yet it must not contain indentations spots that pose a SIDS risk.

Firmness

Make sure your mattress fits comfortably without leaving any extra space between it and its crib sides, according to Witkin. A quality mattress should have a flat, firm surface which resists indentation for best results.

Soft mattresses increase the risk of suffocation when sleeping on their stomach, while firm ones provide resistance that promotes proper skeletal and muscular development as your baby begins rolling over, pushing up, or standing in their crib. To test a mattress's firmness, press around its center and edges; it should snap back immediately! Furthermore, airflow must also be ensured to prevent heat disruptions that disrupt sleep.

Dual-Sided

A typical crib mattress features two sides that can be reversed for use as a toddler bed, providing firm surfaces on one end to reduce SIDS risk while plush, soft surfaces on the other provide ample cushion.

Find a mattress with breathability to regulate temperature. Additionally, look for non-toxic organic or foam crib mattresses and ones certified GOTS/Greenguard Gold for safety.

Make sure the mattress you select is firm and fits tightly within the crib – with no more than a one inch gap – in order to avoid suffocation. Finally, cover it with a fitted sheet for optimal crib mattress experience.

Waterproof

Your baby mattress should provide the foundation for safe and restful rest for your infant or toddler. A standard crib mattress usually comprises foam or innerspring materials, and features waterproof protection to guard against wet diapers.

Baby mattresses must also be firm to minimize suffocation risk and decrease SIDS (Sudden Infant Death Syndrome). A bed that is too soft may result in SIDS (Sudden Infant Death Syndrome).

Naturepedic mattresses combine safe materials with washability in order to offer your baby a peaceful night's rest, with 100 percent organic cotton cover and GREENGUARD GOLD certification. Furthermore, this mattress is free from flame retardants such as phthalates or heavy metals as well as chemical fire barriers for cleaner sleep for your little one. GOTS and MADE SAFE certification ensure it possesses a breathable core made up of recyclable PETE material with 90 percent air space allowing maximum breathability.

Breathable

A breathable baby mattress allows airflow in the bed, providing relief from heat disruptions while making breathing easier for babies who roll onto their stomachs. Most breathable crib mattresses are constructed of porous materials like innerspring coils or organic comfort layers like cotton, wool or coconut coir.

Breathability is also key when selecting a baby mattress; research indicates that trapped CO2 can rebreathe and lead to suffocation if left trapped within soft fabrics and bedding, potentially rebreathing into the lungs and leading to potential death.

As per research, placing your infant to sleep on an unadorned crib mattress free from blankets and pillows is one proven way to reduce their risk of SIDS. Unfortunately, many parents aren't taking this advice and in one Instagram post from an Arkansas mom showed her son's picture-perfect crib featuring blue onesie, grey winter hat embroidered with his name and sonogram photo, binkie clips and two neutrally toned knitted stuffed animals – none of which follow this advice!