Capsule Reflex Roll-up Double Mattress
The Capsule Reflex Roll-up is Furniture Village's own kids' mattress, a slim 12.5cm deep design that works well with bunks and cabin frames.
- Breathable Tencel cover, gentle on skin
- Slim depth suits bunk beds
- 20-year guarantee
£399
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Capsule Reflex Roll-up Mattress
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Mattress details
Mattress
Capsule Reflex Roll-up Mattress
Size
Firmness
Medium Firm
Construction
Rolled
Eco-Friendly
Depth (cm)
13
Layers
2
Layer Details
Tencel cover
A breathable Tencel cover, made from renewable materials, that helps regulate temperature. It means the surface stays comfortable if you tend to run warm at night.
Reflex foam core
A 125mm core of Reflex foam, which gives the mattress its medium-firm feel. It supports the body without a deep sink, though the slim depth means it suits a child's bed better than an adult's.
Layer details from furniturevillage.co.uk and godotti.com product pages, October 2026.
Key benefits
- Real room for a growing child: At 135cm wide, the UK double is 45cm wider than a UK single, so a child who thrashes about or reads in bed has space to spare.
- Same length as a single: The UK double and the UK single are the same length at 190cm, so upgrading the width doesn't demand a longer room.
- Fits most children's bedrooms: We suggest allowing at least 2.6m x 2.8m, which most second bedrooms and older-terrace box rooms can manage with a wardrobe still in place.
- Easy to get upstairs: It arrives rolled, which matters in a double: a full-size 135cm mattress is awkward on a turning terrace staircase, but this carries up boxed.
- Bedding is cheap and everywhere: Double sheets and a 200 x 200cm double duvet are stocked at every price point, so dressing a child's bed stays inexpensive.
- A cool cover at a generous width: The breathable Tencel cover regulates temperature across the full 135cm surface, which helps a warm-sleeping child who migrates around the bed at night.
This size suits you if...
You're moving an older child or young teenager up from a UK single and their room has the floor space to take a 135cm-wide bed, or you're furnishing a bedroom where the bed doubles as a lounging spot for homework and reading. It also suits a child who shares with the family dog or cat, since a UK single gets crowded quickly once a pet claims a corner.
Consider another size if...
Your child's room is under our suggested 2.6m x 2.8m minimum, or you need a single for a bunk or standard child's bed. This mattress comes in the UK double only, so a smaller room means choosing a different mattress altogether.
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FAQ's
How big is the Capsule Reflex Roll-up mattress in a UK double?
It measures 135 x 190cm, which is 4ft 6in x 6ft 3in. That's the standard UK double footprint, so any double bed frame, double fitted sheets and a 200 x 200cm double duvet will fit it without any special ordering.
What room size do I need for the Capsule Reflex UK double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. In a child's bedroom that usually leaves space for a wardrobe and a chest of drawers, though bedside tables on both sides may be a squeeze in a smaller room.
Is the Capsule Reflex UK double big enough for two children sharing?
The UK double gives 67.5cm each for two people sharing, which is workable for two small children on occasion. It's designed as a kids' mattress though, so as a permanent arrangement for two growing children it will start to feel snug within a few years.
Can I use the Capsule Reflex double in a guest room?
For occasional child guests, yes. For visiting adult couples it's a poor fit: at 12.5cm deep it's built for children's lighter bodies, and adults will likely find the support too shallow. A conventional adult double mattress would serve a guest room better.
Will a double mattress like this get up a narrow staircase?
This is one of the easier doubles to move in. It arrives rolled and compressed, so it will manage the turning stairs of an older terrace or a tight new build landing far more easily than a rigid 135cm mattress. Allow 24 hours for it to expand once unrolled.