There's no memory foam in the Jay-Be Dual Support Memory e-Pocket Mattress. Memory e-Fibre is a fibre comfort layer, and the build underneath is the same two layers of pocket springs as the plain e-Pocket. That makes it a decent children's mattress with a softer top, and the owner reviews raise the same length problem as its sibling. Skip it if you were paying extra for memory foam.
Memory e-Fibre is fibre, and it sits on pocket springs
Under the knitted cover sits Jay-Be's Memory e-Fibre comfort layer, then more fibre, then a layer of micro e-Pocket springs over a deep e-Pocket core. The listing says the mattress is completely foam free, so the "memory" describes how the fibre is meant to respond to pressure rather than the slow-sinking foam the word usually means. At 22cm it's the deepest of the Dual Support models.
For your child, a quick-responding fibre top is better than memory foam would be. Children move a lot in their sleep, and foam that holds a shape slows a restless sleeper down and runs warm. The pocket springs underneath do the supporting, each one moving on its own.
A softer top for a single bed, never a bunk
Buy it if your child likes a softer top than the plain e-Pocket gives, for a single frame you've measured. Avoid it for your top bunk. At 22cm it's too deep for most of them, where the mattress has to sit below the maximum line marked on the bed. It's one-sided, so rotate it rather than turning it.
The happy owners and the unhappy ones describe different mattresses
Owners who are happy are very happy: children who find it comfortable from the first night, and one parent who liked it enough to buy a second for another child. The unhappy owners report the same thing as each other. The mattress measured short of the frame once unpacked, and one says the replacement was short too. Another describes soft corners and a thin, uneven feel.
The length is the complaint I'd act on, because a gap at the foot of your child's bed is a safety problem as well as an annoyance. Measure yours the day it expands. If there's a gap, send it back.
What to buy instead
If a softer top is the attraction, the Dual Support Natural e-Pocket uses wool and bamboo over the same springs, and natural fibres sleep cooler. If you just want the springs, the plain Dual Support e-Pocket is the simpler buy. Have a tape measure ready for either when it arrives.
