Sebra Rolmatras, junior 70 x 155 cm - Sebra Sleep - White

I was worried the mattress would slide around once the bed was pulled out to junior length, but this roll mattress sits snugly between the mattress and the sheet and stays put. It's thin, so it doesn't change how the bed feels to sleep on.

Fits perfectly in the junior bed once it's pulled out to full length, and the white cotton looks clean against the mattress. I like that it just lays between the mattress and the sheet instead of needing straps or a cover. Washed it once already and it kept its shape fine.

I was skeptical about needing a separate roll mattress, but it really does keep the mattress from sliding when the bed's pulled out to junior length. The white fabric is soft and it stays put under the sheet.