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Comfort trial

Comfort fillings
Firmness rating

Support system
Transform your sleep with this incredibly decadent, natural mattress. The finest blend of cashmere, silk and mohair combine with a gorgeously plush pillow top that will soothe you to sleep. Over 13000 pocket springs provide exceptional back support. Heavenly!

Individualised springs encased in cloth pockets. Expertly adapting to movement to distribute personalised support to each part of your body.

An additional layer of comfort for a more luxurious feel

A luxuriously soft and gentle natural filling. Cashmere is incredibly breathable and has great moisture-wicking properties. Lightweight and flexible for optimal support.

Luxurious and natural, silk provides sumptuous comfort whilst creating a breathable and resilient sleeping environment.

Stay snuggly all night long. Perfect all year round, wool is a natural insulator and has great temperature regulating properties.

Natural cotton fibres create a perfectly fresh sleeping environment. The soft fillings regulate your body temperature and wicks away moisture.

Hemp is an eco-friendly fibre that is naturally breathable and durable. It is also a natural insulator so it adapts to any temperature condition.

Strong, durable fibres with incredible natural insulating properties so you can enjoy ultimate cool comfort all night long. The durable fibres enhance the longevity of a mattress.

Free of allergens for a cleaner, healthier sleep. No allergenic materials were used so you can enjoy an undisturbed rest without the risk of allergy reactions or respiratory problems.

A traditional and elegant design that holds fillings in place whilst enhancing the stability of the mattress. The luxurious tufting ensures zero shifting, shape loss or sagging.

Offering a soothing night's rest by evenly distributing your body weight across the mattress. The pressure point relief provides the ultimate relaxation needed for a deep slumber.
Gentle support and a plush, softer feel

About 14.6 inches deep. Depth is an important factor when buying a mattress as it can affect the suitability for particular bedding, mattress toppers and bed frames.

With a single-sided mattress, there's no need to flip. Simply rotate every few months to care for your mattress. Fuss free mattress maintenance!

Stitched into the mattress border, turning handles are there for easier moving and turning. When caring for your mattress, simply use the handles provided for ease of use.

A traditional technique which creates a sturdier and more durable border. The stylish hand side-stitching method is used to improve longevity and edge-to-edge support.

For your peace of mind

Expertly handcrafted in the UK. This product helps to support our economy and helps to reduce environmental impact.

This product conforms to BS7177: 2008, for use at home

For the highest standards of quality and safety
Nestle into pillowy-soft comfort and the most luxurious sleep of your life with the Harrison Spinks Cotterdale 13250 Pocket Pillow Top Mattress.
Featuring the most generously sumptuous, 100% natural sleeping surface and a soft pillow top, this is our very finest mattress. It's exclusive to us at Mattress Online.
Pure indulgence
This cloud-soft mattress is packed full to the brim with the most decadent comfort fillings. From smooth cashmere, silk and 100% Yorkshire wool, to the incredible 13250 pocket springs, you'll sink into blissful slumber every night.
At 37cm, it's one of our deepest, most luxurious mattresses, too. You may need to purchase extra-deep sheets!
The finest natural comfort
Every ingredient in this beautifully handcrafted mattress is carefully selected. There's home-grown, springy-soft 100% Yorkshire wool, chosen for its insulating qualities.
Then there's a deluxe blend of sustainably-sourced silk, cashmere and mohair. These luscious fibres are finer than wool and selected for a smooth feel.
It's these natural fillings that make the Cotterdale so incredibly luxurious - and a sheer pleasure to snuggle up in every night.
Soft and sumptuous
The Cotterdale will feel as though you're sleeping on a cloud. Rated medium-soft, this is one of the softest mattresses available!
Featuring a gorgeously plush pillow top, it's perfect if you love a mattress you can sleep in, rather than sleep on.
Looking for a slightly firmer feel? The Harrison Spinks Alwoodley offers a little more support.
Tailor-made support
This is our highest pocket spring count - ever! Featuring an incredible 13250 pocket springs, the Cotterdale will support you like no other mattress.
Known as the Cortecâ„¢ Quad Core spring system, every spring is lightweight and smaller than traditional springs. This makes them incredibly precise as they contour to your unique shape.
The result is the most personalised anatomical support, soothing pressure relief and better care for your back.
Perfect temperature, year-round
This is a mattress that cares for you throughout the seasons. The Yorkshire wool is a perfect insulator as it keeps you cool in summer and warm in winter.
The crisp cotton, flax and hemp wicks away moisture, too. This means you'll stay cool, fresh and dry.
As nature intended
You won't find any foam or chemical treatments in the Harrison Spinks collection. Since wool is naturally fire retardant, it's fire resistant.
Hypoallergenic for peace of mind
The Cotterdale is hypoallergenic for a healthier sleep. Plus, both the Yorkshire wool and hemp are naturally antibacterial, so it'll feel extra fresh.
Deeply peaceful sleep
Thanks to the reinforced mattress border, there's more space to sleep - and no roll-off. The individual pocket springs prevent motion transfer between you and your partner, too. It's everything you need for undisturbed, peaceful sleep.
Easy-care, no fuss
Designed for busy lives, the Cotterdale is so easy to keep in the perfect condition you expect. There are 8 built-in turning handles to rotate it from end-to-end - and you'll only need to do this twice a year.
Cares for you - and our planet
From the carbon-negative hemp, to the home-grown Yorkshire wool, every single part of this mattress is 100% recyclable. So you can rest easy knowing that your mattress won't harm our precious world.
Years of blissful comfort
From the 2 rows of hand side-stitching along the mattress border to the expert hand-tufting, every last detail creates a durable mattress that will stand the test of time.
Nestle into a haven of luxury
Experience the joy of deeper, nourishing sleep - and wake gently, ready to take on your day. Ready as soon as tomorrow, blissful comfort is just a day away!
Weights: Single: 34kg, Double: 51kg, King Size: 60kg, Superking: 72kg
This mattress comes with a 60-Night Comfort Trial - like all of our mattresses!
The trial lets you test your mattress for up to 60 nights. If it's not quite right for you, you can exchange it for a new one.
It can take some time to get used to a new mattress, which is why we ask you to sleep on your mattress for 30 nights. If you're not happy with the feel after 30 nights, simply contact our Customer Service Team, and we'll arrange a mattress exchange.
| Firmness | Soft to medium |
| Comfort fillings | Cashmere, Silk, Wool, Cotton, Hemp, Mohair, Tufted |
| Support system | Pocket Springs |
| Finish | Pillow top |
| Allergy care | Hypoallergenic |
| Pressure relief | Yes |
| Border | Hand side-stitched |
| Turning handles | Yes |
| Single-sided | Yes |
| Guarantee | 5 years |
| Awards & accreditations | Handcrafted in the UK, Approved by the National Bed Federation |
| Fire resistance | Conforms to BS7177: 2008, for use at home |
| Downloads | Harrison Spinks Care and Guarantee |
| Size | Width | Length | Depth |
|---|---|---|---|
| Single | 90cm | 190cm | 37cm |
| Double | 135cm | 190cm | 37cm |
| King Size | 150cm | 200cm | 37cm |
| Superking | 180cm | 200cm | 37cm |
| Emperor | 200cm | 200cm | 37cm |
Please allow for a tolerance of +/- 2cm
The following delivery methods apply to mainland England and most of Scotland, Wales and Northern Ireland. Please read our delivery page for more information.
Next day delivery (weekdays only) Order before | FREE |
Weekday of your choice Order up to 60 days ahead | FREE |
Weekend On Saturday or Sunday of your choice | £17.50 |
Delivery to the front door of your building Free upgrade for Double, King Size, Superking and Emperor to your room of choice | Yes |
Two-hour delivery time slot We’ll let you know on the day before your delivery | Yes |
Call to let you know we’re on our way On your delivery day | Yes |
Delivery to your room of choice Free upgrade for Double, King Size, Superking and Emperor | £20.00 |
Mattress recycling We'll take away your old mattress | £35.00 |
Delivery is on an all-day service, 7am - 8pm for mainland England and most of Scotland, Wales and Northern Ireland.
Need further information? Please visit our Delivery page.
This particular mattress ended up being nothing special for the price I paid. Lesson learnt to try in store first and to read the small print on the free trial!
Verified Purchase
Reply from MattressOnline.co.uk, 2 months ago
Hi there I am sorry you are not finding your mattress comfortable - we appreciate the feedback. The mattress you have purchased does come with a 60-night Comfort Trial; if you are not finding it comfortable you would be more than welcome to exchange this for something more suitable. If you would like to make contact with our Customer Service team on 01709 780881 or customerservice@mattressonline.co.uk, we can discuss the options with you. Kind regards Charlie
Great really worth the money.
Verified Purchase
Wonderful - like sleeping on a cloud with the integrated mattress topper. I have had to buy some 40 cm deep fitted organic cotton sheets as my old sheets were not deep enough. I also wanted a mattress that was entirely made of natural materials and this one fits that bill. It took a couple of weeks to get used to the feel of it but my husband and I love it now!
Verified Purchase
So far so good. Only time will tell though it wasn't a cheap n cheerful mattress. I'm happy with it , but mattress is a little too soft for my wife.
Verified Purchase
This is an extremely comfy mattress. Having tried a number of mattresses before this far is the best mattress I have slept on. Extremely soft and perfect support. No more back aches.
Verified Purchase
This review contains a rating only; no comment was left by the customer.
Verified Purchase
Good Points: Relatively comfortable Improvement Points: Seems expensive for the overall quality
Verified Purchase
Good Points: Sublime Improvement Points: Nothing not to love
Verified Purchase
This review contains a rating only; no comment was left by the customer.
Verified Purchase
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