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Refined resultsKing size mattresses
NOW
€ 199.99
€ 899.00
Grand Relax Memory Foam Mattress - Multi-Zone Pressure Relief & Support (Single, Double, King, Super-King)
NOW
€ 149.99
€ 1091.72
Cashmere Royal Deluxe Gel Mattress - Single to Super King Available
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€ 29.99
Luxury Fleece Thermal King Size Blanket Throw - 3 Colours!
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€ 139.00
€ 250.00
4* NYX Hotel Dublin Christchurch City Break for 2 - Superior King Room, Drinks Vouchers & Breakfast, Award Winning Central Stay
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€ 27.99
€ 60.07
Sonic Kids Cartoon Duvet Cover Set - Breathable Polyester, 3D Print, Single/Double/King, Optional Plush Pillow
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€ 149.00
€ 859.00
Chrono Sport Multizone Mattress - All Sizes
NOW
€ 139.99
€ 1161.84
Regal Prime 12-Zone Ergonomic Mattress - 4 Sizes
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€ 149.99
€ 839.00
Soft Foam Royal Multi-Zone Mattress - All Sizes
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€ 79.99
€ 156.17
Zig Zag Memory Fibre Sprung Mattress - All Sizes
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€ 189.99
€ 1179.44
Tempus Gold Memory Foam Mattress - 4 Sizes
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€ 63.99
€ 164.81
Ergonomic Cooling Memory Foam Pressure-Relief Mattress - Multiple Sizes
NOW
€ 76.99
€ 171.97
Extra Deep Hybrid Memory Sprung Mattress - Pressure Relief & Support in 4 Sizes
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€ 74.99
€ 195.13
Quilted Memory Foam Sprung Mattress - 4 Sizes
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€ 60.99
€ 149.25
Hypoallergenic Cooling Memory Foam Mattress - 5 Sizes
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€ 129.00
€ 693.39
Memory Foam Royal Multi Zone Mattress - 4 Sizes
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€ 79.99
€ 196.37
Cooling Memory Foam Hybrid Mattress - 4 Sizes
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€ 64.99
€ 103.72
Memory Foam Open Coil Mattress - 5 Sizes
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€ 68.99
€ 143.74
Children's Memory Sprung Mattress - Open Coil, Hypoallergenic, 2 Sizes
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€ 70.99
€ 156.48
Hybrid Cool Touch Memory Sprung Mattress - 5 Sizes
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€ 79.99
€ 156.17
Zig Zag Memory Fibre Sprung Mattress - All Sizes
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€ 72.99
€ 184.74
Cooling Memory Foam Spring Mattress - Ergonomic Support in 5 Sizes
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€ 89.99
€ 154.95
Ergonomic Memory Foam Mattress - Pressure Relief & Cooling, 4 Sizes
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€ 70.99
€ 207.03
Memory Foam Mattress with Ergonomic Support & Cooling Comfort - All Sizes
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€ 449.99
€ 709.00
Bed Set with Airbond Mattress & Premium Fabric Headboard - Multiple Sizes
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€ 69.99
€ 144.12
Cooling Memory Foam Mattress - Ergonomic, Pressure-Relief Support (5 Sizes)
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€ 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
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€ 149.00
€ 1187.21
Cashmere Black 12-Zone Memory Foam Mattress - Multiple Sizes
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€ 179.99
€ 1140.00
Royal Premier Pocket Sprung Memory Foam Mattress - Pressure Relief, Multiple Sizes
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€ 75.99
€ 194.57
White Zig Zag Memory Foam Mattress - 4 Sizes
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€ 79.99
€ 192.19
Cooling Memory Foam Mattress with Zig Zag Stitch - 8" Hybrid, Hypoallergenic, Multiple Sizes
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€ 74.99
€ 144.89
Cool Blue Memory Foam Mattress Topper with Cooling Tech - 10 Sizes
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€ 69.99
€ 209.97
Memory Foam Extra Deep Spring Mattress - 4 Sizes
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€ 60.99
€ 127.56
Orthopaedic Memory Foam & Spring Mattress - Pressure Relief, 4 Sizes
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€ 549.99
€ 799.00
Adare 1800 Bed - Premium Base with Plush Mattress & Headboard, Multiple Sizes
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€ 60.99
€ 163.42
Aqua Blue Memory Foam Spring Mattress - 5 Sizes
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€ 60.99
€ 139.45
Desire Beds 7 Core Layer Memory Foam Mattress
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€ 58.99
€ 114.66
Kids Football Mattress - Small Single & Single
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€ 73.99
€ 321.38
Cooling Memory Foam Mattress with Ergonomic Support
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€ 449.00
€ 861.89
Blue Ottoman Bed, Premium Upholstery & Optional Memory Mattress - Headboard Included
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€ 89.00
€ 151.30
Memory Foam Hybrid Mattress with Cooling Technology - Small Single to Double
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€ 499.00
€ 1096.00
Carlin Ottoman Storage Bed with Headboard - 5 Sizes
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€ 499.00
€ 1096.00
Fionn Sunrise Ottoman Storage Bed with Lift-Up Mechanism - 5 Sizes
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€ 499.00
€ 1096.00
Cream Naples Clancy Wingback Ottoman Storage Bed - Multiple Sizes
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€ 599.00
€ 899.50
Dior Wingback Ottoman Storage Bed with Lift-Up Mechanism - Multiple Sizes
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€ 379.00
€ 855.00
Isla Upholstered Ottoman Storage Bed with Lift-Up Mechanism - Multiple Sizes
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€ 399.00
€ 585.99
Divan Bed with 4-Drawer Storage, Plush Fabric - All Sizes
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€ 399.00
€ 587.22
Blue Divan Bed with Storage Drawers - Premium Fabric, Multiple Sizes
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€ 499.00
€ 1096.00
Cream Naples Moira Wingback Ottoman Storage Bed with Lift-Up Mechanism - Multiple Sizes
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€ 499.00
€ 1096.00
Green Plush Ottoman Storage Bed with Lift-Up Mechanism - Multiple Sizes
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€ 399.00
€ 855.00
Grey Plush Ottoman Storage Bed with Lift-Up Mechanism - 5 Sizes
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€ 399.00
€ 586.53
Blue Divan Bed with Storage Drawers - Premium Upholstered Divan Base (All Sizes)
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€ 599.00
€ 1063.00
Green Ottoman Bed with Storage Base & Wingback Headboard - Premium Fabric, All Sizes
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€ 71.99
€ 189.00
Nova Aqualine Headboard - 3 Sizes, 11 Colours
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€ 71.99
€ 189.00
Leatherette Headboard - 3 Sizes, 12 Colours
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€ 71.99
€ 189.00
Napoli Leatherette Headboard - 3 Sizes, 12 Colours
Discover Wowcher UK's best deals on king size mattresses, offering generous 150x200 cm options and even larger 180x200 cm super king sizes to suit spacious bedrooms. Whether you’re upgrading a master suite, furnishing a guest room, or creating a luxurious sleep space for two, a king size mattress brings premium comfort, deeper pressure relief, and lasting support. Explore memory foam king mattresses, latex king mattresses, and hybrid spring designs at discounted prices with flexible delivery and easy returns.
From cooling layers and pressure-relief foams to reinforced edge support and motion isolation, king size mattresses on Wowcher UK are designed to deliver a healthier, deeper sleep. Whether you prefer a plush, medium or firm feel, you’ll find options that align with your sleep style, temperature needs, and budget, all wrapped in compelling deals.
Frequently Asked Questions about King size mattresses
What features should I look for in a king size mattress?
Key features include appropriate firmness level (soft, medium, firm) to suit your sleep position, high-quality memory foam or latex layers for pressure relief, and a resilient base such as an innerspring or pocket-sprung core for strong edge support. Look for cooling properties like gel-infused foams or breathable fabrics to reduce heat buildup. If you share the bed, consider strong motion isolation so you don’t disturb your partner, and verify a comfortable height with adequate edge-to-edge support.
Also check for a balanced support core, durable comfort layers, and a reputable warranty or trial period. King size mattresses often pair with compatible bed frames or foundations, so confirm compatibility and any assembly requirements before purchase.
Which mattress type is best for couples in a king size bed?
For couples, a memory foam king mattress or hybrid king mattress often provides excellent motion isolation, minimizing movement transfer. A latex king mattress offers natural responsiveness and coolness, while a hybrid design combines springs with foam for balanced support and bounce. Consider a medium to medium-firm feel for shared comfort, and look for sectional or zoned support to reduce pressure on hips and shoulders.
Check for a good edge, so you can use the full surface, and ensure the topper or mattress protector is compatible with a king size bed frame. If you want a longer lifespan, select high-density foams and tested winter/summer temperature regulation features to keep both sleepers comfortable year-round.
What does "king size" mean in the UK vs other regions, and which size should I buy?
In the UK, a standard King size mattress typically measures about 150 cm wide by 200 cm long, while Super King reaches around 180 cm by 200 cm. If you’re tall or share with a partner, a larger option can improve overall comfort and movement. In the US, the oversized equivalents differ (king at 76 x 80 inches). Always check the exact dimensions listed in the product description and measure your bed frame to ensure a proper fit.
Consider room size, sheets availability, and how much space you want around the bed for nightstands and movement. If you’re unsure, a 150x200 cm king size is the most common choice and widely supported by frames and bedding, while a 180x200 cm super king provides a more expansive sleeping surface for two.
How thick should a king size mattress be and does thickness affect comfort?
Mattress thickness often ranges from about 25 cm to 40 cm. A thicker mattress can offer more plushness and nuanced support, especially for heavier sleepers or those who prefer deeper contouring. However, thickness alone isn’t the only predictor of comfort—quality comfort foams, spring counts, and edge support matter too. For couples, a 28–32 cm thickness is a popular middle ground that balances comfort with compatibility with most bed frames and foundations.
If you’re shopping on Wowcher UK, read the product details for material blends, warranty coverage, and any included toppers or pillows. Pairing with a compatible bed frame and proper foundation can maximize the mattress’s lifespan and comfort level.
Do king size mattresses come with trial periods, warranties, and returns?
Yes, many king size mattresses on Wowcher UK include trial periods ranging from 30 to 120 nights, allowing you to determine comfort and support in your bedroom. Warranties vary by brand, but common coverage includes manufacturing defects, sagging beyond a set limit, and significant comfort degradation. Always check the terms at checkout, including return windows, restocking fees, and who covers return shipping.
Look for seller policies on exchanges or refunds if the product arrives damaged or defective, and verify whether the trial period applies if you change your mind. A good Wowcher deal will clarify the trial length, conditions, and how to initiate a return or exchange.
What delivery options are common for king size mattresses on Wowcher UK?
Common options include standard delivery for regular orders, express shipping for faster arrival, and free delivery promotions on qualifying mattresses. Some listings offer white-glove delivery or assembly services, click-and-collect in select areas, and scheduled delivery windows to fit your timetable. Always review whether delivery includes packaging removal or setup and whether the frame is included separately.
Tracking and delivery notifications help you plan around your new king size mattress arrival. If you need to arrange a specific delivery date or need help with heavy lifting, check the listing details for available options and any regional restrictions.
What are popular accessories to pair with king size mattresses?
Consider a high-quality mattress topper such as memory foam or latex to fine-tune comfort, a compatible bed frame or foundation for stability, and breathable mattress protectors to extend life. If you sleep hot, look for a cooling mattress topper or a cooling gel foam layer in the mattress. Bedding like fitted sheets, duvet and pillow sets sized for a king bed complete the setup.
Many Wowcher listings also bundle toppers or offer discount codes for bedding, turning a king size sleep upgrade into a complete sleep upgrade at a great price.
How do I choose the best mattress material for a king size bed?
Memory foam king mattresses provide contouring and pressure relief, with optional cooling foams for warmth control. Latex king mattresses offer natural bounce, durability, and breathability, which can be advantageous for couples and hot sleepers. Hybrid king mattresses blend springs with foam layers for a balance of support and responsiveness, often delivering excellent edge support and motion isolation. When selecting, consider your sleeping position (side, back, stomach), weight, and whether you want a firmer or softer feel.
Reviews and trials are helpful—if a mattress doesn’t feel right after a few weeks, leverage the return policy. Also verify cleaning and care requirements to maintain long-term comfort and durability.