With every change of season, we face a dilemma: choosing the duvet that will best regulate our body temperature throughout our sleep. So, should we remove our duvet? Should we swap it for another one or add an extra one? It is difficult to make the right decision, especially in these changeable times when the weather keeps surprising us.
Our Pyrenex duvets have been designed to offer comfort perfectly suited to the conditions of your home and the changing seasons. Filled with French goose and duck feathers and down, each duvet stores warmth and lightness, which are determined by three very important indicators: fill weight, TOG and fill power.
The fill weight at Pyrenex varies according to the intended use and the desired result of the finished product. For duvets, the higher the quantity of down per m², the warmer and fluffier they will be.
- Summer duvets have a fill weight ranging from 80 to 150g/m².
- Temperate duvets contain a fill weight ranging from 150 to 220g/m².
- Warm duvets have a fill weight of over 220g/m². At Pyrenex, they can have a fill weight of up to 270g/m² for the warmest.
The TOG is a British unit of measurement for thermal insulation, i.e. the capacity to trap air and exchange it quickly. The higher the TOG, the warmer the duvet.

The new essential indicator from Pyrenex is the fill power (filling power) of its down. Calculated in CUIN – cubic inch – it refers to the capacity of a given weight of filling to occupy a given volume. The greater the volume occupied, the higher the down's insulation and lightness performance.

Once you are familiar with these three indicators, you will be able to choose the ideal duvet or duvets for your bedroom, suited to your needs for each season.
Summer duvets are ideal for spring and summer seasons when temperatures exceed 22°C in the bedroom. With a fill weight ranging from 80 to 150g/m², they will provide you with comfort, lightness and breathability throughout your nights. On our website, you will find a wide choice of lightweight duvets with an average fill weight of 100g/m². We offer the Luchon, Moorea, Lausanne, Papeete and its health version, Accous and Papeete Light and its health version. For those who are more sensitive to heat, this category of duvet can accompany you throughout the year.
Perfect for mid-seasons, in spring as well as autumn, temperate duvets have become very popular models among sleepers thanks to their fill weight ranging from 150 to 220g/m². Temperate duvets are ideal for use in bedrooms heated between 18°C and 22°C. In store and on our website, you will find many models such as the Moorea Plus, the Colombie and its children's version, Accous Plus, Saint-Lary Plus, Papeete Plus and its health version. If your warmth and lightness needs are consistent throughout the year, temperate duvets will be perfect for meeting your requirements.

In winter, nothing beats wrapping yourself in a warm (or even very warm) duvet to drift off to sleep in complete comfort. Warm duvets from Pyrenex provide excellent protection against cold nights (below 18°C) thanks to the exceptional thermal insulation of French duck and goose feathers and down. You will find a wide choice of warm duvets on our website, with a fill weight from 220 up to 270g/m² for the warmest: Luchon Plus, Ossau, Calgary, Bayonne, Lausanne Plus, Ainhoa and its health version, Legend and Constance. Moreover, using a warm duvet will allow you to save energy by turning off your heating at night. For those who feel the cold, the warm duvet will be your best friend on winter nights.
4-season duvets: the Pyrenex trick
Do two duvets for all seasons really exist? At Pyrenex, we offer pairable duvets to help you adapt to every change of season: winter, spring, summer and autumn. Three ranges of pairable duvets are available on our website (Papeete, Papeete Santé and Moorea) to allow you to combine several duvets with different fill weights and thicknesses to best meet the demands of rapidly changing temperatures.
Below are the possible combinations:
- Duvet Moorea 100g/m² (summer range) + Duvet Moorea Plus 150g/m² (winter range)
- Duvet Papeete Light 80g/m² (summer range) + Duvet Papeete 120g/m² (summer range) + Duvet Papeete Plus 180g/m² (temperate range)
- Duvet Papeete Santé Light 80g/m² (summer range) + Duvet Papeete Santé 120g/m² (summer range) + Duvet Papeete Santé Plus 180g/m² (temperate range)
You have the option of combining a lightweight duvet with a temperate duvet to create a warm winter duvet. The 4-season duvets from Pyrenex allow you to adapt the desired level of warmth throughout the year: the lightweight duvet for mild seasons, the temperate duvet for mid-seasons, and the two tied together with ribbons for winter.
