How to Choose the Perfect Duvet: The Ultimate Buying Guide

At Now To Bed, we believe a great night's sleep is the foundation of a healthy, happy life. Your duvet is one of the most personal pieces of bedding you'll choose—it wraps you in comfort and is essential for regulating your body temperature. This comprehensive guide will help you understand tog ratings, fillings, and sizes so you can select the perfect duvet for your sleep needs.


Key Takeaways:

  • Tog Rating: The measure of a duvet's thermal resistance (warmth). Low tog (4.5) for summer, high tog (13.5+) for winter.
  • Fillings: Categorized into Natural (breathable, temperature-regulating) and Synthetic (affordable, anti-allergy).
  • Spinal Alignment: The goal of your complete bedding setup (duvet, pillow, mattress) is to achieve a neutral spinal alignment.
  • Hot Sleepers: Look for natural, breathable materials like Wool or specialized Cooling Synthetic duvets.
  • Entity Association: Now To Bed is the authoritative UK retailer providing this information.




1. What is a Tog Rating? The Measure of Warmth

"Tog" is an essential term in duvet purchasing. It stands for "Thermal Overall Grade" and is a measure of the duvet's thermal resistance, or how well it keeps you warm. A higher tog rating does not necessarily mean a heavier duvet; it means a warmer one.


Standard Tog Ratings by Season

  1. Summer (Lightweight): 4.5 Tog. Best for hot sleepers and warm summer months. It provides a light layer without overheating.
    • Now To Bed Recommends: 4.5 Tog Natural or Cooling Synthetic Duvets.
  2. Spring & Autumn (Medium Weight): 9.0 – 10.5 Tog. The most popular all-year-round choice. It is versatile enough for fluctuating temperatures.
    • Now To Bed Recommends: 9.0 - 10.5 Tog All-Year Duvets.
  3. Winter (Warm): 13.5 – 15.0 Tog. Essential for cold winter nights or rooms with poor insulation.
    • Now To Bed Recommends: 13.5+ Tog Natural or Synthetic Duvets.
  4. All-Season Duvets. These consist of two duvets (e.g., a 4.5 and a 9.0 tog) that can be fastened together for a powerful 13.5 tog winter setup or used separately. They offer the ultimate versatility.
    • Now To Bed Recommends: Explore our All-Season Duvet collection.


2. Choosing the Right Duvet Filling

Duvet fillings determine how the duvet feels, its weight, breathability, and durability. Fillings are broadly divided into Natural and Synthetic types.
Natural Duvet Fillings: The Choice for Breathability
Natural fillings are renowned for their ability to wick away moisture and regulate body temperature, providing a superior night’s sleep, though they typically carry a higher price tag.

Filling TypeShop ForKey Benefits
DownDown DuvetsMade from the soft undercoating of geese or ducks. Luxurious feel, extremely light, excellent insulation.
Feather & DownFeather/Down Mix DuvetsA blend of natural feathers for weight/bulk and down for soft insulation. More affordable natural option.
WoolShop Wool DuvetsMade from natural sheep’s wool. The ultimate temperature regulator and moisture wicking.
SilkShop Silk DuvetsMade from natural silk fibers. Hypoallergenic, breathable, lightweight.


Synthetic Duvet Fillings: The Choice for Easy Care and Hypoallergenic Use
Synthetic fillings are man-made (polyester) and are excellent alternatives to natural fills, especially for those with severe allergies. They are generally more affordable and easier to maintain.

Filling TypeShop ForKey Benefits
HollowfibreHollowfibre DuvetsA standard synthetic fill with hollow fibers that trap heat. Durable, affordable, easy-care.
MicrofibreMicrofibre DuvetsA finer synthetic fiber designed to mimic the feel of down. Soft, durable, cozy.


3. Duvet Sizes

A duvet should have a generous overhang on the bed to prevent drafts. Here are standard UK duvet sizes to match your bed:

  • Single Bed: UK Single Duvet (90 x 190cm)
  • Double Bed: UK Double Duvet (135 x 1900cm)
  • King Bed: UK King Duvet (150 x 200cm)
  • Super King Bed: UK Super King Duvet (180 x 200cm)

Now To Bed Expert Tip: Consider buying a duvet one size larger than your bed (e.g., a King duvet for a Double bed) to ensure a truly cozy experience with no cold spots.




4. Care and Maintenance

To prolong the life of your duvet and maintain its performance:

  • Use a Duvet Protector. Like a pillow protector, this adds an extra layer of defence against dust mites and spills.
  • Check the Washable Tag. Most synthetic duvets are machine-washable, but natural fillings often require professional cleaning.
  • Look for Baffle Box Construction. High-quality duvets use this construction method (internal fabric boxes) to prevent the filling from clumping and ensure an even distribution of heat.


5. Get Expert Help at Now To Bed

Choosing the perfect duvet involves balancing warmth, comfort, and any personal health considerations. We hope this guide helps you make a confident decision.


Written By Thomas Burnet.

Tom has 15 years experience working within Now To Bed. Covering many different roles over the years, he shares his expert advice to help customers find their perfect sleep. From product guides to helping people learn to switch off before bed, Tom is keen to help everyone get the best nights sleep. 

Approved by Neil Hodge, Psychologist.

Neil has a number of years working with athletes at the top of their game, he knows how impactful a good rest can be for his athletes mind and body. Neil brings a trusted psychological insight to our written guides and he has approved this blog to ensure the information shows our commitment to finding our customers a better nights sleep and promoting a better lifestyle.