Copper Zenith 4000 Dual Spring Mattress
- 4000 springs in two layers
- Copper-infused layer
- 27 cm deep, medium-firm
- Bamboo knitted cover
Good for
- Back sleepers
- Front sleepers
- Couples
- Double and king beds
Made in Britain by a British manufacturer
Free weekday delivery on a date you choose in your basket
Arrives rolled and boxed, easy to carry upstairs
- Depth
- 27 cm
- Guarantee
- 10 years
- Firmness
- Medium-firm
- Family-run UK business
- Free delivery to mainland UK
- Spread the cost at checkout
- Secure checkout
The Millie & Jones Copper Zenith 4000 is the top of the Copper range. It doubles the base layer to 2000 full-height pocket springs and adds 2000 micro springs above them, so you get firm support underneath and a surface that follows your shape. Reflex foam, 2cm of memory foam and a copper-infused layer sit on top, under a bamboo knit cover.
The feel is medium-firm: more supportive than the Copper Summit 3000, with the same responsive top. It suits back sleepers and people who want a firmer bed without the hard feel of a traditional firm mattress, and the independent pocket springs keep one sleeper’s movement from travelling across the bed.
At 27cm deep it is a full-depth mattress for a standard bed frame or divan, so choose deep-fitted sheets. It is made in the UK, meets BS 7177 for fire safety and arrives rolled and vacuum-packed. Unroll it on the day it arrives and allow a day or two for it to reach its full shape.
Key facts
- Feel: Medium-firm (7 out of 10)
- Depth: 27cm
- Springs: 2000 pocket springs, 18cm, with 2000 micro springs above
- Comfort layers: Reflex foam, 2cm memory foam and a copper-infused layer
- Cover: Bamboo stretch-knit, tape-edged
- Sizes: Single 90 x 190cm, Small Double 120 x 190cm, Double 135 x 190cm, King 150 x 200cm, Super King 180 x 200cm
- Fire safety: Meets BS 7177
- Made in: The UK
- Arrives: Rolled and vacuum-packed
- Delivery: Free to mainland UK, on the date you choose in your basket
- Guarantee: 10-year manufacturer’s guarantee
Will it fit your bed?
Choose the size your bed frame is made for: single 90 x 190cm, small double 120 x 190cm, double 135 x 190cm, king 150 x 200cm or super king 180 x 200cm. At 27cm deep, the Copper Zenith 4000 is for standard beds, ottomans and divans. It is too deep for bunk beds, high sleepers and other raised beds, which need a much shallower mattress to keep the guard rail at a safe height.
Common questions
How is it different from the Copper Summit 3000?
Both have two spring layers and are 27cm deep. The Zenith has twice as many pocket springs in the base (2000 against 1000), which makes it medium-firm rather than medium.
Will my fitted sheets fit?
Choose fitted sheets made for mattresses at least 27cm deep, or deep-fitted sheets. Standard sheets made for 25cm mattresses can be tight.
What's Included
- Copper Zenith 4000 Dual Spring Mattress in your chosen size, rolled and vacuum-packed
- Depth
- 27 cm
- Firmness
- Medium-firm
- Construction
- 2000 pocket springs (18 cm) under 2000 micro springs, reflex foam, 2 cm memory foam and a copper-infused layer
- Cover
- Bamboo stretch-knit, tape-edged
- Good for
- Back sleepers, Front sleepers, Couples, Double and king beds
- Arrives
- Rolled and boxed
- Guarantee
- 10 years
- Fire safety
- Meets BS 7177
- Made in
- Britain
Free weekday delivery on a date you choose in your basket
At Millie & Jones, we make delivery simple and flexible. Once you add your items to your basket, you can choose your preferred delivery date for free, whether that’s tomorrow or up to 4 months in advance. Need extra time? We’ll reserve your items safely in our warehouse until you’re ready, ensuring a smooth, stress-free delivery exactly when it suits you. You’ll also receive a 3-hour delivery window and a courtesy call 60 minutes before arrival, so you’ll know exactly when to expect us.
Read more about how delivery works on our delivery information page.
Tell us within 14 days of delivery if you change your mind, then return it within a further 14 days. Return costs are yours.
For hygiene reasons we can't take back a mattress that has been removed from its sealed protective packaging, unless it's faulty. If it arrives faulty or damaged, you can reject it for a refund within 30 days of delivery.
To start a return, email support@millieandjones.co.uk with your order number. Full details are in our returns and refunds policy.
It arrives rolled. Unbox it soon after delivery, in the room it's going in. Lay it on the bed, cut away the wrapping carefully and let it unroll. Give it time to recover its full shape before you sleep on it.
Rotate it head to toe regularly so it wears evenly, and turn it over only if it's double-sided. A waterproof protector keeps it clean and fresh for longer.
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Shop With Flexibility
Quality sleep shouldn't strain your budget. Spread the cost with flexible payment plans at checkout.
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Buy With Confidence
Every product includes a manufacturer guarantee. If something's not right, we'll make it right.
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Delivered Free, On Your Schedule
Free delivery to mainland UK. Choose a date that works for your schedule.
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Set Up & Ready to Sleep
On selected beds, add assembly on the bed's page and a two-person team will build it in the room of your choice and take the packaging away. For any other bed, you can book a local assembler through Taskrabbit.
