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Refined resultsKing size memory foam mattresses
NOW
€ 139.00
€ 1549.00
Magnum Cashmere Memory Foam Mattress - 4 Sizes
NOW
€ 189.99
€ 1179.44
Tempus Gold Memory Foam Mattress - 4 Sizes
NOW
€ 149.00
€ 557.99
Visco Biotherapy Ergonomic Hypoallergenic Memory Foam Mattress - 5 Sizes
NOW
€ 169.00
€ 587.99
Visco Cashmere Memory Foam Mattress - Pressure Relief, 5 Sizes
NOW
€ 129.00
€ 407.99
Dream Aloe Vera Memory Foam Mattress - Ergonomic, Cooling, 5 Sizes
NOW
€ 139.00
€ 488.99
Visco Luxury Pureflex Memory Foam Mattress - Ventilating, Medium-Firm, 5 Sizes
NOW
€ 69.99
€ 144.12
Cooling Memory Foam Mattress - Ergonomic, Pressure-Relief Support (5 Sizes)
NOW
€ 73.99
€ 144.12
Cooling Memory Foam Mattress - Ergonomic, Pressure-Relief Support (5 Sizes)
NOW
€ 73.99
€ 128.81
Orange Memory Foam Mattress with Bonnell Springs - Ergonomic Support in All Sizes
NOW
€ 79.99
€ 192.19
Cooling Memory Foam Mattress with Zig Zag Stitch - 8" Hybrid, Hypoallergenic, Multiple Sizes
NOW
€ 63.99
€ 164.81
Ergonomic Cooling Memory Foam Pressure-Relief Mattress - Multiple Sizes
NOW
€ 74.99
€ 195.13
Quilted Memory Foam Sprung Mattress - 4 Sizes
NOW
€ 139.00
€ 959.00
Memory Foam Multizone Mattress - Pressure Relief & Duo Firmness (All Sizes)
NOW
€ 159.00
€ 660.33
Marron 27 Hybrid Mattress - Pocket Spring & Memory Foam, All Sizes
NOW
€ 72.99
€ 184.74
Cooling Memory Foam Spring Mattress - Ergonomic Support in 5 Sizes
NOW
€ 60.99
€ 149.25
Hypoallergenic Cooling Memory Foam Mattress - 5 Sizes
NOW
€ 129.00
€ 437.99
Luxury Hypoallergenic Memory Foam Mattress - 5 Sizes
NOW
€ 189.00
€ 542.99
Graphene Cooling Memory Foam Mattress - 5 Sizes
NOW
€ 89.99
€ 154.95
Ergonomic Memory Foam Mattress - Pressure Relief & Cooling, 4 Sizes
NOW
€ 159.00
€ 542.99
Bioactive Hypoallergenic Visco-Elastic Memory Foam Mattress - 5 Sizes
NOW
€ 139.00
€ 470.99
Thermo-Regulating Memory Foam Mattress - Ergonomic, Cooling, 5 Sizes
NOW
€ 70.99
€ 207.03
Memory Foam Mattress with Ergonomic Support & Cooling Comfort - All Sizes
NOW
€ 149.00
€ 1187.21
Cashmere Black 12-Zone Memory Foam Mattress - Multiple Sizes
NOW
€ 139.00
€ 494.99
Hermes Visco Memory Foam Mattress - Pressure Relief & Support (4 Sizes)
NOW
€ 139.00
€ 491.99
Brooklyn Paradise Memory Foam Mattress - Cooling, Pressure Relief, 4 Sizes
NOW
€ 149.00
€ 1009.00
Max One Orthopaedic Memory Foam Mattress - Pressure Relief & Cooling in 4 Sizes
NOW
€ 179.99
€ 1140.00
Royal Premier Pocket Sprung Memory Foam Mattress - Pressure Relief, Multiple Sizes
NOW
€ 75.99
€ 194.57
White Zig Zag Memory Foam Mattress - 4 Sizes
NOW
€ 74.99
€ 144.89
Cool Blue Memory Foam Mattress Topper with Cooling Tech - 10 Sizes
NOW
€ 60.99
€ 139.45
Desire Beds 7 Core Layer Memory Foam Mattress
NOW
€ 129.00
€ 693.39
Memory Foam Royal Multi Zone Mattress - 4 Sizes
NOW
€ 79.99
€ 196.37
Cooling Memory Foam Hybrid Mattress - 4 Sizes
NOW
€ 64.99
€ 103.72
Memory Foam Open Coil Mattress - 5 Sizes
NOW
€ 149.00
€ 959.00
Supreme Hybrid Memory Foam & Pocket Spring Mattress - 4 Sizes
NOW
€ 69.99
€ 209.97
Memory Foam Extra Deep Spring Mattress - 4 Sizes
NOW
€ 60.99
€ 127.56
Orthopaedic Memory Foam & Spring Mattress - Pressure Relief, 4 Sizes
NOW
€ 73.99
€ 321.38
Cooling Memory Foam Mattress with Ergonomic Support
NOW
€ 60.99
€ 163.42
Aqua Blue Memory Foam Spring Mattress - 5 Sizes
NOW
€ 89.00
€ 151.30
Memory Foam Hybrid Mattress with Cooling Technology - Small Single to Double
NOW
€ 30.99
€ 69.00
Luxurious Memory Foam Mattress Topper
NOW
€ 68.99
€ 143.74
Children's Memory Sprung Mattress - Open Coil, Hypoallergenic, 2 Sizes
NOW
€ 70.99
€ 156.48
Hybrid Cool Touch Memory Sprung Mattress - 5 Sizes
NOW
€ 59.99
€ 151.32
7 Layer Cooling Memory Foam Mattress
NOW
€ 149.99
€ 1091.72
Cashmere Royal Deluxe Gel Mattress - Single to Super King Available
NOW
€ 149.99
€ 839.00
Soft Foam Royal Multi-Zone Mattress - All Sizes
NOW
€ 79.99
€ 156.17
Zig Zag Memory Fibre Sprung Mattress - All Sizes
NOW
€ 76.99
€ 171.97
Extra Deep Hybrid Memory Sprung Mattress - Pressure Relief & Support in 4 Sizes
NOW
€ 79.99
€ 156.17
Zig Zag Memory Fibre Sprung Mattress - All Sizes
NOW
€ 17.99
€ 23.25
Ergonomic Memory Foam Massage Support Pillow - Breathable, Soft, Surround Support - Blue or Grey
NOW
€ 29.99
€ 71.95
Orthopedic Contour Memory Foam Pillow - Ergonomic Butterfly Cervical Support, Adaptive Polyester/Cotton, Lightweight
NOW
€ 22.99
€ 39.99
Orthopaedic Memory Foam Cervical Pillow - Breathable Knitted Cotton, Ergonomic 4-Partition Support
NOW
€ 449.00
€ 861.89
Blue Ottoman Bed, Premium Upholstery & Optional Memory Mattress - Headboard Included
NOW
€ 29.99
Luxury Fleece Thermal King Size Blanket Throw - 3 Colours!
NOW
€ 139.00
€ 250.00
4* NYX Hotel Dublin Christchurch City Break for 2 - Superior King Room, Drinks Vouchers & Breakfast, Award Winning Central Stay
NOW
€ 27.99
€ 60.07
Sonic Kids Cartoon Duvet Cover Set - Breathable Polyester, 3D Print, Single/Double/King, Optional Plush Pillow
Discover the comfort of king size memory foam mattresses on Wowcher UK, where you can save on premium sleep essentials. Our curated selection combines pressure-relieving memory foam with generous king-size dimensions, giving couples and families room to stretch out while enjoying built-in support and motion isolation. From medium to plush profiles, these mattresses adapt to your body shape for lasting comfort through every night and season.
Whether you’re upgrading a master suite, furnishing a guest room, or chasing a sleep upgrade on a budget, our king size memory foam mattress deals cover a range of densities, heights, and cooling innovations. Look for features like breathable cover fabrics, cooling gel layers, and zoned support foams designed to keep your spine aligned and temperature comfortable throughout the night.
Explore king size memory foam mattress bundles with compatible foundations, toppers, and protectors to build a complete sleep setup. With traffic-saving codes, flexible delivery options, and generous return policies, you can shop confidently and upgrade your sleep space with confidence and ease.
Frequently Asked Questions about King size memory foam mattresses
What are the key benefits of a king size memory foam mattress?
King size memory foam mattresses offer expansive sleeping surface, excellent contouring to support the spine, and superior motion isolation, which means less partner disturbance. Memory foam also helps relieve pressure points at the hips, shoulders, and lower back, making them a popular choice for couples and sleepers with joint pain. The right density and thickness enhance durability and long‑term support, while cooling layers or breathable covers help manage heat throughout the night.
In addition, many king size memory foam models feature zoned support for targeted firmness, edge-to-edge comfort for lounging, and compatibility with standard bed frames and foundations. When shopping, consider your sleep position, weight, and preferred firmness to choose a mattress that delivers lasting comfort.
How thick should a king size memory foam mattress be for best support?
Common king size memory foam mattresses range from 8 to 12 inches in thickness. A thicker profile often provides greater contouring, higher weight capacity, and longer lifespan, while a thinner model can be lighter to move and may be suitable for lighter sleepers or guest rooms. If you share the bed with a partner or pet, a 10–12 inch mattress generally offers a balanced blend of comfort and durability for most body types.
Density also matters: higher density foams (around 4 to 5 lb/ft³) tend to offer better support and durability, while lower densities provide a softer feel. Consider trial periods and return policies when choosing to ensure the thickness and density meet your expectations.
Are memory foam mattresses good for back pain and spinal alignment?
Yes, many sleepers with back pain find memory foam helpful for maintaining neutral alignment. A well‑chosen king size memory foam mattress supports the lumbar region while allowing the hips and shoulders to sink slightly for pressure relief. Look for zoned support or higher density foams that reinforce the mid‑section, helping to keep the spine in a natural alignment throughout the night. Personal comfort varies, so pairing with a supportive pillow and proper bed setup can enhance the benefit.
If your pain is severe or persistent, consider a firmer option or one with targeted lumbar support, and take advantage of trial periods to confirm it suits your needs before committing.
Do king size memory foam mattresses sleep hot, and what cooling features help?
Memory foam can retain heat, but many modern king size models incorporate cooling features. Look for graphited or gel-infused foams, open-cell structures, and breathable covers that promote airflow. Some mattresses include phase-change materials, cooling gels, or moisture-wicking fabrics designed to dissipate heat for a fresher night’s sleep. Pairing with breathable bed toppers and ensuring your room is well ventilated can further reduce warmth.
If overheating is a concern, start with a cooler model, verify the cooling claims in product specs, and choose a mattress with a solid return policy so you can test the cooling performance in real sleep conditions.
How long does a king size memory foam mattress last, and what affects longevity?
Most king size memory foam mattresses offer a warranty window of about 7–10 years with proper care. Longevity depends on foam density, thickness, weight distribution, how often the bed is rotated, and overall care. Heavier sleepers or frequent use in households with pets may wear foam faster, so opting for higher density foams and a rotation schedule can extend life. Inspect covers regularly and follow care instructions to maintain resilience and support over time.
Consider purchasing a solid foundation or bed frame that minimizes stress on the foam, and take advantage of trial periods and return policies if you’re testing a new sleep system.
What should I know about choosing firmness and density for a king size memory foam mattress?
Firmness and density influence support, feel, and heat retention. For back sleepers or heavier individuals, a firmer, higher-density foam (around 4–5 lb/ft³) offers robust support and longer lifespan. Side sleepers often benefit from a medium to medium-soft feel to cushion shoulders and hips. Weight and sleeping position guide the choice: lighter sleepers may prefer a softer feel, while combination sleepers may prefer balanced medium options. Always compare product specs, read customer reviews, and use trial periods to confirm you’ve found the right match for your sleep style.
In addition, consider edge support, motion isolation, and cooling features when selecting firmness. A well-chosen king size memory foam mattress harmonizes with a suitable pillow, bedding, and frame to deliver consistent comfort night after night.
Can I return or exchange a king size memory foam mattress bought on Wowcher UK?
Yes, Wowcher UK listings typically include return or exchange options within a specified window, subject to seller terms. When testing a new memory foam mattress, keep the box intact, use the trial period to assess comfort and support, and remember that some promotions may carry regional or time-based restrictions. If a product doesn’t meet expectations, contact Wowcher support or the seller promptly to initiate the process and understand any restocking or transport charges that may apply.
For peace of mind, review the listing details for delivery, setup, and removal options, as well as any trial period length. This helps you maximize value while ensuring the king size memory foam mattress aligns with your sleep goals.
What other king size sleep accessories should I consider with memory foam mattresses?
Consider a compatible king size bed base or platform with solid support to prevent sagging. Add a breathable, moisture-wicking mattress protector to extend life and keep the surface clean. Pair with cooling pillows, a mattress topper for extra contouring, and fitted sheets designed for deep pocket king mattresses. Look for bundle deals that include these essentials so you can complete your sleep space in one purchase and maximize overall savings.
Also, explore room-appropriate accessories like mattress protectors with waterproof or antimicrobial features, and consider a soft-top duvet or weighted blanket to optimize comfort based on your climate and preferences.