IKEA KRUMMELUR Foam Mattress for Crib Reviews (2026)

KRUMMELUR works best when you judge it by the basics rather than by luxury features. Our testing showed that the mattress kept a neat fit in the crib, felt consistently firm across the surface, and handled cleanup and sheet changes well. The trade-off is obvious: it feels thin, stays on the firm side, and has very little spring-back.

The dual-surface design is useful, though. The wavy side feels a touch more forgiving, while the smooth side feels firmer and flatter.

Who It’s For

• Parents who want a firm, straightforward crib mattress

• Nurseries where easy cleanup matters

• Shoppers who would rather buy practical than plush

Who It’s Not For

• Anyone looking for a thick, cushioned crib mattress

• Parents who prefer a bouncier surface

• Shoppers expecting premium materials at this price point

We set KRUMMELUR up in a standard crib and used our full mattress-testing process to check support, cooling, pressure relief, motion isolation, responsiveness, edge support, and durability. We rotated and flipped it during normal routines, including sheet changes, nighttime reach-ins, and cleanup handling. We also used weighted loading to see how the surface and edges held shape over time instead of judging it from a first-night impression.

What stood out first was how steady the mattress felt. During our hands-on checks, the perimeter stayed tidy when we leaned in and out of the crib, and the middle section resisted the kind of saggy dip that can make a thin foam mattress feel sloppy. In our pressure checks, the surface did not feel plush, but it also did not create odd hard spots. Motion testing was equally solid for an all-foam crib mattress: shifting weight on one side caused very little ripple across the rest of the surface, and the edges held their shape better than we expected from a budget model.

What we liked

• Firm, even support that stays consistent

• Cover cleanup feels built for real day-to-day use

• Movement stays well contained for foam

Who it’s best for

• Parents who want a stable crib surface without extra fuss

• Busy households that value simple maintenance and a more easy-to-keep-clean sleep setup

• Nurseries where heat and airflow matter

Where it falls short

• The thin build does not feel premium

• Responsiveness is only average for foam

• If you want plushness, this is not the right fit

• Mattress type: Foam crib mattress

• Size: 27 1/2" x 52"

• Thickness: 3 1/8"

• Feel: Firm overall; wavy side medium-firm, smooth side firmer

• Price checked on IKEA U.S. listing: $89.99 for IKEA Family members; regular $99.00

• Cover: Removable; machine washable warm up to 140°F/60°C

• Materials: Recycled polyester ticking; 70% viscose / 30% polyester filling; polypropylene core cover; polyurethane foam (1.7 lb/cu.ft.)

• Safety notes: Child-safe zipper; suitable for cribs with inner dimensions 27½" x 55⅛"; complies with ASTM F2933

• Package weight: 7 lb 14 oz

Choose KRUMMELUR if you want a firm crib mattress with simple maintenance, a washable cover, and a snug fit. It makes the most sense for parents who care more about stable support and easy cleanup than extra cushioning. It is also a sensible option for budget shoppers and families who prefer a more practical nursery setup. If cooler airflow or a more premium wash-through design is the priority, you may want to look higher up the category. And if certified organic materials matter most, there are stronger options in that lane.

If you are still comparing options, our broader guide on how to choose a mattress and our picks for kids’ mattresses can help frame what matters most.

This mattress is intentionally firm and relatively thin, so it will not deliver a plush or deluxe feel. If you want more bounce, more thickness, or a more premium material story, you will notice the ceiling quickly. It is also purpose-built for crib use, so its value comes from doing one job cleanly rather than trying to be versatile.

Why choose this model

• KRUMMELUR keeps the focus on firm support, straightforward setup, and easy day-to-day care.

• The dual-surface design gives you a small comfort adjustment without making the mattress complicated to use.

Alternatives to consider

• Newton Crib Mattress: a better fit if you want a thicker, more fully washable breathable design.

• Naturepedic Classic Organic Cotton Crib Mattress: a stronger option if certified organic materials are the priority.

• Measure your crib interior and confirm a snug fit before first use.

• Use a properly fitted crib sheet so the surface stays smooth and tight for safer sleep.

• If you want a slightly softer feel, start with the wavy side; if you want the flatter feel, use the smooth side.

• Wash the cover inside out with the zipper closed to help it hold up better over time.

• After washing, let every layer dry fully before putting the mattress back together.

• Flip and rotate it periodically to keep wear more even.

• Keep the zipper secured; it is a safety feature, not a grab handle.

• Avoid thick toppers or extra padding that could affect fit and sheet tension.

• During sheet changes, lift from the flat surface instead of pulling hard at the corners.