Sealy Alder Geltex Supreme Mattress

Sealy Alder Geltex Supreme Mattress

Item Number: 9000899649




rrp from £555
from £429
Choose Size:

The Alder Geltex from Sealy is a lovely mattress, combining a supportive spring system and luxurious Geltex filling that will cradle and support your body whilst you drift off into a deep sleep. Geltex a combination of elastic gel and air permeable foam bringing previously unknown sleeping comfort to those who truly appreciate the value of healthy sleep.

The 620* Posturetech Spring System also provides Zonal Support, which correctly supports and aligns the spine in its Natural position.

  • No Turn Mattress - Rotate Regularly
  • Posture Tech Spring System - Sealy Posturetech Spring Systems are designed to provide a softer feel that gradually gets firmer as pressure increases without compromising on comfort. 
  • Zonal  Support - Zonal technology correctly supports and aligns the spine in its natural shape, helping to reduce aches and pains.
  • Smart Fibres - Smart Fibre mattresses with Purotex hold Allergy UK’s Seal of Approval endorsement. This is delivered with essential elements, Purotex microcapsules release friendly bacteria into the fabric of the mattress to reduce mould and moisture.
  • Adaptive Technology - Textiles used in this mattress is designed to dynamically respond to temperature change, helping to keep individuals comfortable by absorbing excess body heat when you get too hot and then release it back into the environment when you cool down.
  • Dimensions
    • Single - 90cm (w) x 190cm (l) x 31cm (d) Spring Count 348
    • Double - 135cm (w) x 190cm (l) x 31cm (d) Spring Count 522
    • King - 150cm (w) x 200cm (l) x 31cm (d) Spring Count 620
    • Super King - 180cm (w) x 200cm (l) x 31cm (d) Spring Count 792
  • 5 year warranty on mattress

Spring Count based on King Size

  • Sprung Mattress Size: Double, King Size, Single, Super King
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We hope you are satisfied with your purchase but if you ever need to return an item, you can do so within 28 days of receipt.

Please note, we cannot offer refunds on perishable goods, pierced jewellery, duvets, pillows, mattresses, underwear or on swimwear if the hygiene seal is not in place or has been broken. Items which are made to order will also be non returnable unless faulty or not as described. Your legal rights are not affected.

Goods can be returned to your nearest Oldrids & Downtown store, or alternatively, tell us about the product you want to return by emailing us at or phoning us on 03452 505502, remembering to include your order number, 10 digit item code and the reason for return and whether you would like a full refund or a replacement.

We recommend that a verifiable method of return delivery is used, as proof of posting cannot be taken as proof of receipt.

For larger items we can organise for a courier to come and collect the product you wish to return and will discuss collection charges with you at the time.

Click here to view our full Returns Policy.