Small Double Mattresses

Discover small double mattresses that give extra space in compact rooms. Comfortable, well-made options for families, growing children or guest bedrooms.

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New & Trending
Wink Sleep Gravity Memory Foam Spring Mattress with premium Cool Touch FabricWink Sleep Gravity Memory Foam Spring Mattress with premium Cool Touch Fabric
Delivery By: 31 July
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Wink Sleep Gravity Memory Foam Spring Mattress with premium Cool Touch Fabric

  • Memory foam springs
  • Cool touch fabric
  • Personalized support
Sale price From £63.20
Medium
Summer Sale
Motion Isolation Reflex Foam Mattress 5 ZoneMotion Isolation Reflex Foam Mattress 5 Zone
Delivery By: 31 July
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Motion Isolation Reflex Foam Mattress 5 Zone

  • Fully recyclable foam
  • Spine alignment support
  • Easy transport design
Regular price £187.92 Sale price From £68.30
You Save: £119.62
Medium Soft
Summer Sale
Motion Isolation Reflex Foam Mattress 4 ZoneMotion Isolation Reflex Foam Mattress 4 Zone
Delivery By: 31 July
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Motion Isolation Reflex Foam Mattress 4 Zone

  • Eco-friendly recycled
  • Tailored body support
  • Motion isolation zones
Regular price £225.68 Sale price From £73.40
You Save: £152.28
Medium Soft
Summer Sale
Motion Isolation, Reflex Foam Mattress with Orthopaedic SupportMotion Isolation, Reflex Foam Mattress with Orthopaedic Support
Delivery By: 31 July
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Motion Isolation, Reflex Foam Mattress with Orthopaedic Support

  • High-density reflex
  • Even weight distribution
  • Hypoallergenic quilted cover
Regular price £265.89 Sale price From £83.59
You Save: £182.30
Medium Firm
Summer Sale
Diamond Memory Foam Mattress with Reflex Foam | Medium FirmDiamond Memory Foam Mattress with Reflex Foam | Medium Firm
Delivery By: 31 July
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Diamond Memory Foam Mattress with Reflex Foam | Medium Firm

  • Premium spring system
  • Memory foam support
  • Cooltouch breathable fabric
Regular price £197.92 Sale price From £81.95
You Save: £115.97
Medium Firm
5 Years Warranty
BedzOnline Hybrid - Maxi Cool Prime Individually Pocket Mattress With Memory FoamBedzOnline Hybrid - Maxi Cool Prime Individually Pocket Mattress With Memory Foam
Delivery By: 31 July
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BedzOnline Hybrid - Maxi Cool Prime Individually Pocket Mattress With Memory Foam

  • 5-zone pocket springs
  • Edge support
  • Breathable cover
Sale price From £164.99
Firm
5 Years Warranty
BedzOnline Box Top Premium Tranquility MattressBedzOnline Box Top Premium Tranquility Mattress
Delivery By: 31 July
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BedzOnline Box Top Premium Tranquility Mattress

  • Wrapped springs
  • Breathable hypo foam
  • Absorbs motion
Sale price From £149.99
Firm
5 Years Warranty
BedzOnline 9 Zone Therma Pure Premium Hybrid Memory Foam MattressBedzOnline 9 Zone Therma Pure Premium Hybrid Memory Foam Mattress
Delivery By: 31 July
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BedzOnline 9 Zone Therma Pure Premium Hybrid Memory Foam Mattress

  • Pocket springs support
  • Mesh sides cool
  • Zoned coils comfort
Sale price From £149.99
Medium Firm
Summer Sale
Twinkle Sleep Red Kids MattressTwinkle Sleep Red Kids Mattress
Delivery By: 31 July
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Twinkle Sleep Red Kids Mattress

  • Kids mattress comfort
  • Premium spring system
  • Therma Pure foam
Regular price £68.97 Sale price From £54.99
You Save: £13.98
Medium
5 Years Warranty
BedzOnline Memory Foam Mattress Pocket Sprung Mattress with 3D Breathable Knitted Fabric and Airy MeshBedzOnline Memory Foam Mattress Pocket Sprung Mattress with 3D Breathable Knitted Fabric and Airy Mesh
Delivery By: 31 July
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BedzOnline Memory Foam Mattress Pocket Sprung Mattress with 3D Breathable Knitted Fabric and Airy Mesh

  • Wave memory foam
  • Pocket coil support
  • Soft breathable cover
Sale price From £159.99
Firm
New & Trending
BEDZONLINE Pocket Sprung Mattress - Thick Medium Firmness Sleep SupportBEDZONLINE Pocket Sprung Mattress - Thick Medium Firmness Sleep Support
Delivery By: 31 July
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BEDZONLINE Pocket Sprung Mattress - Thick Medium Firmness Sleep Support

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  • 1000 pocket springs
  • Orthopaedic pressure relief
  • Hypoallergenic breathable cover
Sale price From £143.51
Medium Firm
5 Years Warranty
BedzOnline Pocket Sprung Mattress Double with Breathable Foam and Individually Pocket Spring - MediumBedzOnline Pocket Sprung Mattress Double with Breathable Foam and Individually Pocket Spring - Medium
Delivery By: 31 July
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BedzOnline Pocket Sprung Mattress Double with Breathable Foam and Individually Pocket Spring - Medium

  • Pocket springs
  • Memory foam
  • Breathable cover
Sale price From £119.99
Firm

Small double mattresses offer a smart solution when a single mattress feels too tight but a full double takes up too much room. At around 120 cm wide and matching standard length, they provide a comfortable sleep surface for one person and can also accommodate two in a pinch. This size works especially well in smaller bedrooms, guest rooms or shared children’s spaces where floor space still matters. You’ll find a wide choice of support levels, materials and finishes so you can choose what feels right for that room and routine.

Each mattress in this range is built with everyday family life in mind. Strong internal cores, breathable covers and easy-care fabrics make these mattresses both practical and inviting. Whether it’s a growing child transitioning to a bigger bed or a guest space that needs an upgrade, this collection gives you the flexibility to match size, comfort and durability. Take your time comparing the options and pick a mattress that supports peaceful nights now and into the future.

Frequently Asked Questions
The standard thickness of a kids' mattress is six to twelve inches. Because of their interior coil construction, hybrid and coil.
The standard dimensions of a toddler bed are about 140 cm in length and 70 cm in width, whereas the dimensions of a single bed are typically 190 cm in length and 90 cm in breadth.
The size of the bed depends on your child's age, the size of the bedroom, and future growth. Toddler beds are suitable for young children transitioning from cribs, while twin or full-size beds are more appropriate for older children or teenagers.
Standard Delivery is £5.99 for the UK Mainland. Next Working Day Delivery is £5.99 for in-stock items. Northern Ireland Delivery is £19.95. Mattresses Standard Delivery Charges are £9.99
We cannot amend the delivery address once your order has been processed and dispatched.