Sleepwell Energy S Mattress combines Viscojel foam and Quantech Sleep fabric to deliver refreshing comfort and balanced support. With one firm side, one soft side, and a washable zipped topper, it offers flexible, double-sided sleep comfort.
£445.00 – £880.00Price range: £445.00 through £880.00
The compact and well-proportioned silhouette of both the seats and the small sofa, opens up to a new way of using the dining space.
A new, more intimate way of opening up new visual and proportional horizons of the living space, both in homes and in hospitality venues.‎
The possibility of having both the armchair and the dining and lounge small armchairs.
| Specification | Chair | Armchair | Sofas |
| Height | 37" | 42" | 42" |
| Width | 26.5" | 32.5" | 142" |
| Depth | 19.5" | 22.5" | 24.5" |
| Assembly Required | No | No | Yes |
| Packaging Type | Box | Box | Box |
| Package Weight | 55 lbs. | 64 lbs. | 180 lbs. |
| Packaging Dimensions | 27" x 26" x 39" | 45" x 35" x 24" | 46" x 142" x 25" |
KEY TECHNOLOGIES

Istikbal has developed a new sleep formula using Quantum Technology, created by combining five naturally occurring energy stones with nanotechnology, under the name Quantech Sleep. Quantech Sleep Technology helps restore the energy you lose throughout the day while you sleep, supporting you in waking up refreshed, revitalised, and full of energy for the new day.

Viscojel Technology from Istikbal is a pioneer in today’s sleep technology. Viscojel foam, enriched with microbeads, provides exceptional support by perfectly adapting to the body’s anatomy, creating an ideal environment for quality sleep. Compared to standard foams, it offers superior comfort with enhanced breathability and higher thermal conductivity. It responds to body temperature, helping to reduce sweating in summer while providing a warm and comfortable sleep environment in winter.

SL Spring Technology delivers a firm sleeping surface for those who prefer firm mattresses, combining lightweight structure with reliable support. The springs connect as a continuous unit, moving together with equal resistance to prevent deformation and ensure long-term durability. Thanks to a higher spring count per square metre, the system adapts closely to body contours and supports increased body weight. Its thinner wire and unique spring design create a firmer, high-performance structure that works in harmony, promoting natural sleep movements and helping muscles relax during rest.
SECTION VIEW
- Knitted mattress fabric and quilted layers
- Removable quilted mattress layer and filling materials
- Special Viscojel foam
- Extra comfort–enhancing soft foam
- Special felt layer for even weight distribution
- High-density edge support foam
- SL spring system
- Special felt layer for even weight distribution
- Extra comfort–enhancing firm foam
- Bottom quilted layers
MATTRESS COMFORT LEVEL: ONE SIDE MEDIUM-FIRM, THE OTHER SIDE FIRM
DESCRIPTION
Sleepwell Energy S Mattress is designed to deliver a balanced sleep experience by combining advanced comfort technologies with practical functionality. Featuring a special Viscojel foam layer and Quantech Sleep mattress fabric, it helps create a comfortable and supportive sleep environment so you can wake up feeling refreshed and energised.
The Quantech Sleep fabric supports the body’s natural balance during sleep and helps maintain a stable sleeping temperature throughout the night, contributing to improved comfort and relaxation. The Viscojel foam, enriched with microbead technology, adapts perfectly to the body’s structure, offering superior support compared to standard foams while providing a cooler and more comfortable sleep surface.
Designed with dual comfort, the mattress offers one firm side and one soft side, allowing you to choose the feel that best suits your preference. Thanks to its double-sided use, the mattress can be flipped to extend durability and comfort over time.
For added practicality, Sleepwell Energy S features a zipped, removable topper, which can be used on both sides of the mattress and is machine washable, making maintenance simple and hygienic.
Ideal for those seeking a medium-soft to firm sleep option, Sleepwell Energy S combines innovation, comfort, and everyday convenience in one versatile mattress.
SIZE GUIDE
| Size | CM | Inches | UK Equivalent (ft/in) |
|---|---|---|---|
| Single | 90 × 190 | 35 × 75 | 3ft × 6ft 3 |
| Euro Single | 90 × 200 | 35 × 79 | 3ft × 6ft 6 |
| Wide Single | 100 × 200 | 39 × 79 | 3ft 3 × 6ft 6 |
| Small Double | 120 × 190 | 47 × 79 | 4ft × 6ft 3 |
| Euro Small Double | 120 × 200 | 47 × 79 | 4ft × 6ft 6 |
| Double | 140 × 190 | 55 × 75 | 4ft 6 × 6ft 3 (Fits UK 135cm bases) |
| Euro Double | 140 × 200 | 55 × 79 | 4ft 6 × 6ft 6 |
| King Size | 150 × 200 | 59 × 79 | 5ft × 6ft 6 |
| Euro King | 160 × 200 | 63 × 79 | 5ft 3 × 6ft 6 |
| Super King Size | 180 × 200 | 71 × 79 | 6ft × 6ft 6 |
| Emperor | 200 × 200 | 79 × 79 | 6ft 6 × 6ft 6 |
| Size | Double – 140x190cm (4’6×6’3)4'6 × 6'3 – 140 × 190 cm, Emperor – 200x200cm (6’6×6’6)6'6 × 6'6 – 200 × 200 cm, Euro Double – 140x200cm (4’6×6’6)4'6 × 6'6 – 140 × 200 cm, Euro King – 160x200cm (5’3×6’6)5'3 × 6'6 – 160 × 200 cm , Euro Single – 90x200cm (3’×6’6)3'0 × 6'6 – 90 × 200 cm , Euro Small Double – 120x200cm (4’×6’6)4'0 × 6'6" – 120 × 200 cm, King – 150x200cm (5’×6’6)5'0 × 6'6 – 150 × 200 cm, Single – 90x190cm (3’×6’3)3'0 × 6'3 – 90 × 190 cm, Small Double – 120x190cm (4’×6’3)4'0 × 6'3 – 90 × 190 cm, Super King – 180x200cm (6’×6’6)6'0 × 6'6 – 180 × 200 cm, Wide Single – 100x200cm (3’3×6’6)3'3 × 6'6 – 100 × 200 cm |
|---|---|
| Spring Type | SL Spring |
| Foam Type | Viscojel Foam, Extra Comfort-enhancing Soft Foam |
| Mattress Technology | Quantech Sleep, Viscojel |
| Mattress Firmness | |
| Height | 27 cm |
| Features | E1 Grade Materials, Dual-Sided Use, Edge Support Foam, Knitted Fabric, Machine Washable Topper, Removable Zipped-On Topper |
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About brand
LONDON
ISTIKBAL
Kayseri / Türkiye
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Istikbal is Türkiye's leading furniture brand, recognized for setting industry standards through innovation, quality, and customer-focused design. Since 1957, it has shaped modern living with furniture that combines comfort, function, and contemporary design, with a presence across international markets.
From living spaces to bedrooms and beyond, Istikbal creates complete home furnishing solutions designed for everyday life, while using natural resources responsibly and focusing on long-term value for people and the environment.

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