Babies grow quickly, and their sleep needs change right along with them. One day, you’re setting up a crib for a newborn, and, before long, that same baby is pulling to stand, cruising along the rails, and entering the toddler stage. A 2-stage crib mattress is designed to support that transition with a firmer infant side and a slightly more cushioned toddler side.
For a Naturepedic 2-stage crib mattress, the switch generally happens around your child’s first birthday, but you might not want to (or be ready to!) flip it on an exact date. Below, we’ll explain everything you need to know: what a 2-stage crib mattress is, whether you need one, how the infant and toddler sides differ, when and how to flip it, whether it should also be rotated, and why mattress firmness matters for newborn sleep.
When to Flip a 2-Stage Crib Mattress: Key Points
- A 2-stage crib mattress has two sleep surfaces: a firmer side for infants and a slightly more cushioned side for toddlers.
- Always use the infant side from birth and throughout your baby’s first year.
- Naturepedic 2-stage crib mattresses can generally be flipped around 12 months, as your child enters the toddler stage.
- The toddler side is an optional comfort feature. A toddler can continue sleeping on the firmer infant side.
- Check the mattress label and product instructions before flipping because recommendations can vary by manufacturer and model.
Note: This blog may contain links to Naturepedic products and promotional content where relevant to the topic discussed.
First Things First: What Does 2-Stage Crib Mattress Mean?
A 2-stage crib mattress, also called a dual-stage or two-sided crib mattress, has two usable sleep surfaces designed for different stages of early childhood. One side is firmer and intended for infants. The opposite side has a little more cushioning for toddlers while still providing a firm, supportive crib mattress surface.
A 2-stage design does not mean that the mattress should be flipped regularly like some adult mattresses. Your baby should begin on the designated infant side and remain on that side throughout infancy. The mattress is flipped only when your child is ready for the toddler side.
Is a 2-Stage Crib Mattress Necessary?
No, a 2-stage crib mattress is not necessary for safer or more comfortable sleep. A properly designed single-stage crib mattress can provide the firm support children need throughout infancy and the toddler years, provided it continues to fit the crib properly and remains firm, flat, clean, and in good condition.
The toddler side of a 2-stage mattress is a convenience and comfort feature rather than a requirement. It allows parents to introduce slightly more cushioning without purchasing a second mattress. A dual-sided design may also extend the mattress’s usefulness through the crib and toddler-bed stages.
Naturepedic’s Classic Organic Crib Mattress is available in single-stage and dual-stage options, while the Breathable Organic Crib Mattress and Breathable Ultra Organic Crib Mattress feature 2-stage designs.
Infant Side vs. Toddler Side: Who Should Use Each?
The two sides of a 2-stage crib mattress are designed for different developmental stages. The infant side is extra firm to provide the stable, flat sleep surface babies need throughout their first year. The toddler side adds a little cushioning for older children while remaining firm and supportive.
Although age provides a helpful general guideline, the transition is not based on comfort alone. Always use the infant side from birth and follow the instructions for your specific mattress before switching sides. The comparison below explains how the two surfaces differ.
These differences show why each surface serves a distinct stage. Before making the transition, check the mattress label to confirm which surface is intended for infants.
Pro Tip: How Can You Tell Which Side Is the Infant Side?
Look for a sewn-in label identifying the infant and toddler sides. The infant side should also feel noticeably firmer when you press your hand against the surface, while the toddler side may have a little more give.
Do not rely on feel alone, however. Construction varies among manufacturers, and a properly designed crib mattress will feel much firmer than an adult mattress on both sides. Check the label before placing the mattress inside the crib.
When to Flip a Baby Mattress from the Infant to Toddler Side
For current Naturepedic 2-stage crib mattresses, you can generally flip the mattress when your child is approximately 1 year old and entering the toddler stage. Increased mobility, such as standing and moving confidently around the crib, may accompany this transition, but you should still follow the age and usage guidance provided with your specific mattress.
Do not flip the mattress early simply because the toddler side feels softer or more comfortable to an adult. Babies have different sleep needs, and the firmer infant surface is intentionally designed for their stage of development.
You also do not have to flip the mattress immediately when your child turns 1. If you are uncertain, leave the infant side facing up and review the mattress label or instructions. The firmer side remains appropriate for toddlers, so there is no disadvantage to waiting.
How Do You Flip a 2-Stage Crib Mattress?
- Remove the fitted sheet, breathable cover, protector, and any other removable bedding.
- Take the mattress out of the crib and inspect it for sagging, damage, moisture, staining, or uneven areas.
- Clean and dry the mattress according to the manufacturer’s care instructions.
- Turn the mattress over so the label identifies the toddler side as facing up.
- Return the mattress to the crib and confirm that it fits tightly against every side.
- Replace the fitted sheet and any manufacturer-approved cover or protector.
Should You Turn a Crib Mattress Too?
Flipping and rotating are not the same thing. Flipping a 2-stage mattress changes the sleep surface from the infant side to the toddler side, while rotating it moves the end beneath your baby’s head to the opposite end of the crib. A single-stage crib mattress should not be flipped unless the manufacturer specifically says that both sides are intended for sleep.
Routine head-to-foot rotation is generally unnecessary unless the manufacturer recommends it or you notice uneven wear. A crib mattress should remain flat and evenly supportive. Replace it if it develops sagging, soft spots, damage, or an uneven surface rather than attempting to correct the problem by rotating it.
Why Is a Firm Mattress Recommended for Newborns?
Newborns need a firm, flat, non-inclined sleep surface because an overly soft surface can indent or conform around a baby’s face. This can increase the risk of suffocation, wedging, or entrapment. A firm crib mattress maintains a more stable surface beneath a baby’s head and body.
The American Academy of Pediatrics explains that a firm surface should not indent when a baby is lying on it. The federal Consumer Product Safety Commission crib mattress standard also includes required firmness testing intended to address hazards associated with overly soft mattresses.
Firm does not mean uncomfortable for a newborn. Adults often associate comfort with plushness, but babies do not need the same cushioning adults prefer. For an infant, comfort comes from an even, supportive sleep surface, appropriate sleepwear, a comfortable room temperature, and a clean, dry mattress.
Learn more about infant firmness requirements in our guide to how firm a crib mattress should be.
Choosing a 2-Stage Organic Crib Mattress
A 2-stage design can be a practical choice for families who want one mattress to serve their child from infancy through the toddler years. In addition to checking the firmness and fit, consider the mattress materials, waterproofing, cleanability, certifications, and compatibility with your crib.
Naturepedic 2-stage crib mattresses are made with GOTS-certified organic cotton and feature a firmer infant side and a slightly more cushioned toddler side. Waterproof models use seamless waterproofing made without vinyl/PVC, and breathable models add a removable, washable cover designed to promote airflow at the sleep surface.
Explore the complete collection of organic crib mattresses to compare single-stage, 2-stage, lightweight, innerspring, waterproof, and breathable options.
Have feedback on our story? Contact us to let us know what you think, or visit our About Us page to learn more.
