How to lower crib mattress?

How to lower crib mattress?


Lowering a crib mattress is an essential step in ensuring the safety and comfort of your baby. As your little one grows and becomes more active, adjusting the mattress height becomes necessary to prevent climbing accidents or falls. In this article, we will explore different methods and techniques to lower a crib mattress effectively.

When to Lower the Crib Mattress

Knowing when to lower the crib mattress is crucial to maintain a safe sleeping environment for your baby. Most cribs come with adjustable mattress heights, allowing you to lower it as your child grows. The general guideline is to lower the mattress when your baby begins to sit up unassisted or when they reach a specific height, usually around 35 inches. However, always refer to the manufacturer’s instructions for your specific crib model.

Steps to Lower a Crib Mattress

Step 1: Prepare the crib: Before attempting to lower the crib mattress, ensure that the crib is empty and free from any bedding or toys. This will make the process easier and safer.

Step 2: Locate the mattress support brackets: Look for the mattress support brackets on the inside of the crib. These brackets are usually located on each corner or side of the crib. They may be secured with screws or other fasteners.

Step 3: Remove the mattress support brackets: Depending on your crib model, you may need to unscrew or remove the fasteners holding the mattress support brackets in place. Use a screwdriver or the appropriate tool to do this. Be sure to keep the screws or fasteners in a safe place for later use.

Step 4: Adjust the mattress support: Once the brackets are removed, you can lower the mattress support to the desired height. Most cribs offer multiple height options, so choose the one that is appropriate for your baby’s age and development stage.

Step 5: Secure the mattress support brackets: After adjusting the mattress support, reattach the brackets using the screws or fasteners you removed earlier. Ensure that they are tightly secured to prevent any wobbling or instability.

Alternative Methods

If your crib does not have adjustable mattress heights or you are unable to lower the mattress using the above steps, there are alternative methods you can consider:

Use a crib wedge: A crib wedge is a foam or inflatable wedge that can be placed under the mattress to elevate one end slightly. This can create a gentle incline and provide a safer sleeping position for your baby.

Transition to a toddler bed: If your child has outgrown the crib and is ready for a toddler bed, this can be a suitable option. Toddler beds are typically lower to the ground, reducing the risk of falls.


Lowering a crib mattress is an important step in ensuring the safety and well-being of your baby. By following the steps outlined above, you can easily adjust the mattress height to accommodate your growing child. Remember to always refer to the manufacturer’s instructions for your specific crib model and consider alternative methods if necessary.