The Bedzonline 20 CM Premium Comfort Pocket Sprung Mattress is a hybrid mattress made in the UK and offers a great balance of comfort, support and breathability. At 20 CM thick, the mattress has unconventionally made individually pocketed springs that work alone and independent of the mattress to give greatest spinal aligning and pressure point relief. The foam and the quilted fabric above are made to allow more breathability and airflow to keep you cool and fresh all night while sleeping on the mattress. The mattress is also covered by a hypo allergenic micro quilted cover so you can use it if you have allergies and get a healthier sleep. The mattress can be rolled and vacuum packed resulting in a compact package allowing you to fit into areas for transportability and convenience when moving in to your home. Once you unpack the mattress and remove the packaging it will begin expanding and should take about 24 - 72 hours to fully take shape. This 4 ft 6 double mattress is suitable for a guest room, kids room or everyday sleeping and is a great value product with no compromise on comfort or quality.Product Specifications: Size: 4 ft 6 DoubleType: Hybrid Mattress (Pocket Sprung with Breathable Foam)Zones: Multi-zoned pocket springs for tailored supportFirmness: MediumCover Material: Hypoallergenic, breathable micro-quilted polyester fabricMattress Depth: 20 cmRoll Packed: Yes – vacuum-packed and rolled for easy deliveryCompatible Bed Types: Suitable for all standard 4 ft 6 double bed frames, including slatted, divan, and platform basesSetup Time: Begins expanding immediately; reaches full shape in 24–72 hours after unpackingHypoallergenic: Yes.