Description
Memory-style pressure relief, without the foam
The Jay-Be Benchmark S3 Memory Responsive Support Mattress gives the slow, moulding feel people like about memory foam, but it is made entirely from fibre. Jay-Be’s Memory e-Fibre™ softens under your shoulders and hips to relieve pressure points, then recovers quickly when you move, so you do not get the “stuck in the mattress” feeling or the trapped heat that a foam layer can cause. It sits over a deep e-Spring™ core for even, supportive comfort, and the whole mattress is 100% foam-free.
The S3 sits in the middle of Jay-Be’s Benchmark range: more cushioning than the entry Benchmark S1, and a lower price than the S5 hybrid and S7 tri-brid. It is made in the UK, delivered vacuum-packed and rolled, and covered by Jay-Be’s manufacturer guarantee.
Inside the S3, top to bottom
- Soft knitted cover with a quilted finish, in fabric certified to OEKO-TEX® Standard 100.
- Advance e-Fibre™, an extra-fine fibre for a luxurious first feel. Jay-Be’s life-cycle figures for this fibre show 90% lower CO₂ emissions, 99% less water and 99% less land use than cotton.
- Memory e-Fibre™ for quick-response pressure relief.
- Rebound e-Fibre™ for contour support.
- High-density eco insulator so the springs cannot be felt.
- Deep e-Spring™ core that spreads your weight evenly.
- High-density e-Fibre™ base layer, a padded border for durability, and side handles for turning.
Fire safety is met with a salt-based treatment rather than a chemical finish. The fillings are hypoallergenic and odourless, and no animal-derived materials are used, so the S3 is vegan-friendly.
Who it suits
Side sleepers and anyone with sore hips or shoulders will notice the pressure relief most. Because it is foam-free and breathable, it also suits warm sleepers who have found memory foam too hot. It is a good-value choice for a main bedroom, a guest room or a student or rental property where a long-lasting, low-maintenance mattress is needed.
Specification
| Model | Jay-Be Benchmark S3 Memory Responsive Support Mattress |
|---|---|
| Sizes (W × L × D) | Single 90 × 190 × 20 cm · Small Double 120 × 190 × 20 cm · Double 135 × 190 × 20 cm · King 150 × 200 × 20 cm |
| Support | Deep e-Spring™ core |
| Comfort layers | Advance e-Fibre™, Memory e-Fibre™, Rebound e-Fibre™, high-density insulator and base; 100% foam-free |
| Cover | Quilted knitted fabric, OEKO-TEX® Standard 100 |
| Packed size (roll) | Single 32 × 32 × 100 cm · Small Double 32 × 32 × 129 cm · Double 32 × 32 × 144 cm · King 32 × 32 × 160 cm |
| Packed weight | Single 17.5 kg · Small Double 22.3 kg · Double 28 kg · King 32 kg |
| Fire retardant | Salt-based treatment |
| Vegan | Yes |
| Made in | United Kingdom, zero-to-landfill factory |
| Jay-Be codes | 812900 · 812200 · 812400 · 812500 |
Unboxing
Move the roll into the bedroom before opening it. Place it on the base, cut away the wrapping carefully and let the mattress unroll. Leave it 24 to 48 hours in a ventilated room to reach its full 20 cm depth. Rotate it head to toe every few weeks for the first three months, then every three months.
Delivery
Free delivery to mainland England and mainland Wales, including Anglesey. Rolled packing means it fits through narrow doorways and up tight stairs. We do not deliver to Scotland, Northern Ireland, the Isle of Man, the Channel Islands, the Isle of Wight or the Isles of Scilly.
Frequently asked questions
Is this a memory foam mattress?
No. It contains no foam at all. The “memory” layer is Memory e-Fibre™, a fibre that gives a similar pressure-relieving feel while staying breathable.
How firm is the Benchmark S3?
It has a cushioned, medium feel: soft fibre layers on top of a supportive spring core. It suits side and back sleepers.
Will it sleep hot?
Fibre fillings let air move through the mattress and help wick away moisture, so it generally sleeps cooler than foam.
What is the difference between the S1, S3, S5 and S7?
The S1 is the entry model with a sprung core and fibre comfort layers. The S3 adds Memory e-Fibre™ for pressure relief. The S5 is a hybrid with a micro pocket spring layer, and the S7 is a tri-brid combining memory fibre with micro pockets.
Which bed sizes does it fit?
Standard UK Single, Small Double, Double and King. It fits any frame, divan or ottoman in the same size.




















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