Our verdict
Yawnder Reviews
The 5 Little Monkeys Kids Mattress Sleep System combines an eight-inch memory-foam mattress with a pillow and washable waterproof protector. It is a straightforward option to compare when shopping for a child’s regular bed, especially if you value a protector included in the package.
At a glance
| Feature | Current manufacturer listing |
|---|---|
| Type | 8-inch memory-foam mattress |
| Bundle | Mattress, pillow and washable waterproof protector |
| Feel | Described as cushion firm by the manufacturer |
| Sizes | Twin, full and queen listed; confirm stock by size |
| Foam | CertiPUR-US certified polyurethane foams |
The existing Yawnder page does not contain a complete model-specific standardized test record. The information here combines manufacturer specifications and buying guidance rather than a numerical test score.
Construction and materials
The current manufacturer listing describes a foam base with two memory-foam layers, including one with gel beads, and a cover containing organic cotton, polyester and stretch fiber. It lists CertiPUR-US certification for the foam. That certification concerns specified foam content and emissions; it does not mean the entire mattress is free of all chemicals.
The foam construction has no coil core. Memory foam may contour more slowly than a spring surface; actual comfort depends on the sleeper and the specific version. Cooling materials are not a guarantee of a particular sleeping temperature.
What parents should consider
Bed size and fit: Measure the bed frame and choose the correct mattress dimensions. For bunk beds, follow the bed’s mattress-size and maximum-thickness instructions. The upper surface must be at least five inches below the top of the guardrail; children under six should not use the upper bunk. See CPSC bunk-bed guidance and the bed’s instructions.
Firmness: The company describes the mattress as cushion firm. Check whether the child can move comfortably and whether the surface feels appropriate for their size and preferences.
Cleaning: The included protector is washable. The company lists separate washing instructions for the cover, protector and pillow; follow the current care label and let components dry completely.
Infants: This regular bed and its included pillow are not a substitute for an infant sleep setup. The CDC recommends a firm, flat sleep surface in a safety-approved crib, bassinet or play yard, with no pillows or loose bedding for babies.
Compare the full purchase
| Question | What to check |
|---|---|
| Bundle value | Compare the total price with a mattress, protector and pillow purchased separately. |
| Foam or hybrid? | The brand also lists a separate Advanced Hybrid. Check the exact model and components; this review describes the foam sleep system. |
| Room and base | Measure the space, mattress height and frame support before ordering. |
| Return process | Confirm eligibility, accessories, fees and pickup or shipping arrangements with the seller. |
Trial and warranty
The manufacturer currently advertises a 100-night trial and 15-year limited warranty for the sleep system. Stock and promotions vary. Check the written conditions for the exact size and seller, including how the included accessories are handled if the mattress is returned.
View the current sleep system →
Frequently asked questions
Does the sleep system include a protector?
Yes. The current manufacturer listing includes a washable waterproof protector and a pillow with the mattress.
Is this the same as the Advanced Hybrid?
No. The sleep system described here uses an all-foam mattress; the brand sells a separate hybrid model.
Does an eight-inch mattress fit every bunk bed?
No. Always check the bed manufacturer’s limits and guardrail requirements.
Some links on Yawnder may be affiliate links. Product specifications and policies can change.
Bottom line
5 Little Monkeys’ foam mattress bundle is most useful to compare as a complete purchase: mattress, included pillow and protector, size fit and current policy. The separately sold Advanced Hybrid is a different product. Verify the child's bed-frame requirements and avoid assuming every eight-inch mattress is safe for every bunk bed.
Compare this mattress against 142 tested mattresses
Sort all 142 mattresses we have tested by pressure relief, support, cooling, motion isolation, edge support, price, trial and warranty, then filter by how you actually sleep. Of those, 84 hold a complete standardized record and 41 a partial standardized record.