What Size Mattress Fits a Delta Children Mini Crib?

On this page (7 sections)

1. What size mattress fits a Delta Children mini crib?
2. Why don't mini crib mattress sizes all match?
3. How should you compare mattress and crib dimensions?
4. What should you check before ordering a replacement?
5. Does the mattress thickness affect the crib setup?
6. Which Delta Children mattress details matter most?
7. How do you choose the right mini crib mattress?

The Delta Children mini crib mattress included with the Folding Portable Mini Baby Crib measures 37.5 x 23.25 x 1.5 in. The crib measures 39 x 25 x 37.25 in overall, so don't use its outside footprint as the mattress size.

The phrase “mini crib mattress” does not guarantee one universal fit. Compare the exact crib model and mattress dimensions before choosing a replacement, and follow the crib manual's fit and thickness guidance.

For a broader look at how compact cribs compare with larger models, see mini crib vs full size crib. If you're deciding whether a smaller convertible model may work as your child grows, read What Exactly Is a Mini Convertible Crib for a Growing Family?.

What size mattress fits a Delta Children mini crib?

The included mattress for the Delta Children Folding Portable Mini Baby Crib is 37.5 in long, 23.25 in wide and 1.5 in thick. Those are the mattress dimensions, not the crib's outside measurements.

The crib's footprint is 39 in wide by 25 in deep. That difference is expected: the frame surrounds the sleep surface, so a mattress should not be chosen by matching the frame's width and depth.

The included mattress stores inside the crib when it is folded. The crib also has casters and two mattress height positions, according to its product details.

For other rolling models, compare mini convertible cribs with wheels.

If you need a replacement, check the model number and the crib manual before ordering. A mattress that seems close by eye may leave an unsafe gap or fail to fit as intended.

Why don't mini crib mattress sizes all match?

Mini cribs can have different mattress dimensions, even when their names use the same general size label. Check each crib's stated mattress fit instead of assuming all mini mattresses are interchangeable.

For example, the Dream On Me Aden measures 39 in long by 28 in wide and is compatible with a standard mini crib mattress sold separately. That outside crib size differs from the Delta folding crib's 39 x 25 in footprint, but outside dimensions alone don't guarantee the Aden's precise mattress measurements.

The Dream On Me Jayden is another mini crib, but it includes an attached changing station and three drawers, creating a much larger overall footprint. Its stated overall dimensions are 53.78 x 27.56 x 39.76 in, which describes the combined unit rather than the mattress.

A crib's outside length and width help you plan room layout. They do not tell you the sleep surface dimensions or mattress thickness.

How should you compare mattress and crib dimensions?

Compare the mattress's length, width and thickness with the requirements for the exact crib model. Don't infer mattress size from the crib footprint or from another brand's mini crib.

The table shows why crib dimensions aren't interchangeable with mattress dimensions. For the Aden and Jayden, check the exact manual or manufacturer information for compatible mattress measurements.

When measuring a replacement, use the mattress itself for its length and width, then check its thickness against the crib instructions. If the mattress is compressed or bent, lay it flat before measuring.

What should you check before ordering a replacement?

Confirm the crib's exact name and model number before buying a mattress. Then compare the replacement's dimensions with the mattress fit specified for that crib.

Use this checklist:

1. Find the model label on the crib or in its paperwork.
2. Check the crib manual for the approved mattress dimensions and thickness.
3. Compare those requirements with the replacement mattress measurements.
4. Confirm that the mattress lies flat and fits the crib frame as the instructions describe.
5. Follow the manual's guidance for mattress height positions and use.

Don't add extra padding to make a mattress fit more snugly. If you're unsure whether a replacement is compatible, contact the crib manufacturer with the model number.

If you want to shop among mini cribs that include a mattress, compare our best mini crib with mattress included guide. For a wider size overview, see high quality mini crib dimensions.

Does the mattress thickness affect the crib setup?

Thickness can affect how the sleep surface sits within the crib, so check the crib instructions before changing mattress thickness. The Delta folding crib includes a 1.5 in mattress and has two mattress height positions.

The Aden has three mattress support positions, with stated heights of 18, 14.1 and 10.1 in from the floor. Those measurements describe the support positions, not a mattress thickness recommendation.

A mattress height setting is not a substitute for checking compatibility. Use the model's instructions to confirm which mattress dimensions and thickness are permitted.

For another perspective on standard crib sizing, see What Is a Standard Size Convertible Crib?. If you're comparing long-term conversions, Does a 3-in-1 Crib Convert to a Full Size Bed? explains what to check about that crib style.

Which Delta Children mattress details matter most?

The most useful fit details are 37.5 in long, 23.25 in wide and 1.5 in thick for the mattress that comes with the Delta Children Folding Portable Mini Baby Crib. Its crib footprint is 39 x 25 in, and those numbers describe different parts.

The crib's two-position support lets you lower the mattress as your baby begins to sit or stand. Follow the crib manual for when and how to adjust the support.

If you're comparing a separate mattress, our best delta children mattress crib guide covers crib mattress options. If you are planning the rest of the room, best delta children dresser may help you compare storage choices.

How do you choose the right mini crib mattress?

Choose a mattress by model-specific compatibility, not by the “mini crib” label alone. For the Delta folding crib, the included mattress is 37.5 x 23.25 x 1.5 in; other mini cribs may need a different match.

If you're buying the Delta Children Folding Portable Mini Baby Crib, use those included mattress dimensions as your reference and verify replacement compatibility with the crib instructions. For the Aden or Jayden, check the exact model's guidance before selecting a mattress.

Sources

• Delta Children Folding Portable Mini Baby Crib
• Dream On Me Aden 4-in-1 Mini Baby Crib
• Dream On Me Jayden 4-in-1 Convertible Mini Baby Crib with 3 Drawer Changer

Frequently asked questions

What size mattress comes with the Delta Children mini crib?

The Delta Children Folding Portable Mini Baby Crib includes a mattress measuring 37.5 x 23.25 x 1.5 in. The crib itself measures 39 x 25 x 37.25 in, so its outside footprint is not the mattress size.

Check the exact model and mattress fit before choosing a replacement.

Does every mini crib use the same mattress size?

No. Mini crib dimensions can vary by model, so don't assume a mattress fits because both items are called mini.

Compare the mattress length and width with the crib maker's approved size for your exact model, and follow the crib manual's fit guidance.

Is the Delta Children included mattress 1.5 inches thick?

Yes. The mattress included with the Delta Children Folding Portable Mini Baby Crib measures 1.5 in thick, 37.5 in long and 23.25 in wide.

The Dream On Me Aden mini crib is compatible with a standard mini crib mattress sold separately, so check its exact dimensions before pairing one.

Can I use a thicker mattress in a mini crib?

Use only a mattress that fits the crib and follows its instructions for mattress thickness and height settings. A thicker mattress can change how much of the crib rail remains above the sleep surface, so check the manual for your model before making a switch.

What should I measure before buying a mini crib mattress?

Confirm the crib model, then check its manual for the approved mattress length, width and thickness. Measure only as a cross-check, since the frame's outside footprint is larger than its mattress.

Also review how the mattress support positions work with the mattress you plan to use.