Bought two of these recently (one 10" one 9") for bunks but never used in the end. Still vacuum packed in box. Box is quite heavy at around 15kg. See amazon or google for full specs.
SZSL Single Mattress 3FT, 10.2 Inch Memory Foam Pocket Sprung Hybrid Mattress Single, 7 Zone Orthopedic Medium Firm Mattress with Back Pain Relief, Mattress 90x190 26cm.