We all love to dwell into cushion comfort on the sofa, but finding the right degree of comfort can be a tricky ordeal. What kind of filling should be in the seat cushions and which kind of scatter cushions works best? Learn more below as we dive head first into the world of cushions.

Scatter Cushions

Adding scatter cushions is an easy and effective way to elevate a room and introduce colour, pattern and luxury in an interior design space without overwhelming it. By using different sizes, textures, mixtures and colours of scatter cushions you can breathe vibrant life into any living space.

Scatter cushions need to be soft and supple to let your body mould around them, which creates comfort and support. You can browse a selection of in stock Alter London scatter cushions here.

Knife-Edge Scatter Cushions

A knife-edge cushion has a top and bottom panel, and no border. This type of cushion gets its depth from the amount of filling, which means it is not possible to choose an exact depth, only an approximate. This construction gives the cushion a domed appearance in the centre and a thinning appearance like a knife-edge to the sides.


The knife-edge cushion is an extremely popular shape as a scatter cushion, but is also considered a modern design choice for seat and back cushions because it embodies a less formal and more relaxed style. Knife-edge cushions are only available with loose fillings because foam blocks are not suitable for the shape.

Boxed-Edge Cushions

A boxed-edge cushion is made with a top and bottom panel, and a sidewall (i.e. border) around the edge. The border creates a boxed appearance and is vital in determining the cushions depth. The cushion can be made in any size or shape, and there is no restriction on the cushions border size (i.e. depth).


Boxed-edge cushions can be made with any filling including loose natural and synthetic options, and all available foam densities. This type of cushion is most popular as seat and back cushions but also works as scatter cushions. When used as a scatter cushion the boxed-edge design offers more support and creates a more unique look.

Seat and Back Cushions

At Alter London pillow talk means cushion filling. The sexy conversation behind choosing the right cushion filling for your seat and back cushions is worth having because it is essential for beautiful furniture with great comfort.

Squishy and engulfing? Or firm and supportive? Tastes differ widely when it comes to what makes a seat comfortable.

At Alter London we first evaluate the spring construction of the seat base before choosing the filling of your cushion. In general, softer fillings work better on a coil sprung base while fibre and foam fillings suit a firmer seat base.

Cushion Filling

There exists a wide variety of cushion fillings. Below are Alter London’s options for ideal cushion fillings.

Polyester Fibre

Polyester fibre is man-made, stable and very strong. The fibre used in cushion filling is called Fibrefill. Fibrefill means the polyester has large volume, which translates into soft and bulky cushions.


Polyester Fibre

Over time Fibrefill tends to go a little flat so you need to plump up your cushions to make sure they look full. Plumping up your cushions introduces air between the fibres and makes them fill out.

Polyester Fibrefill is a synthetic version of downs and feathers with qualities such as warmth, washable and naturally stain resistant. Compared to downs and feathers, Polyester Fibrefill is non allergenic and therefore suitable for most people. Many pillows and bedding is now available with this fibre in place of feathers due to its versatility.

Downs and Feathers

Downs and feathers is a natural filling for your cushions. Downs are very fine and very good at insulating, while feathers are heavier and add firmness to the cushion.


Down & Feather mix

A pure down cushion is the height of luxury and very long lasting but it is also very expensive. To balance the cost of a pure down cushion it is usually mixed with feathers.

Cushions made from a down and feather mix needs to be plumped up regularly to allow air to get in-between the downs and feathers, and make them fill out. When using this type of cushion filling it is always best to overfill the casing, allowing for the natural loss of some of the filling.

When choosing the fabric for making the inner pad, it should be made out of feather-proof ticking because this prevents the feathers from extruding.


For the ultimate luxury, combine the best of two worlds with the Wrap. E.g. the wrap can use the resilience and stability of foam, and envelope it with a soft-channelled duvet wrap filled with non-allergenic fibre or feather. This creates a soft and comfortable seat with a firm centre.


Foam-Fibre mix


Foam-Feather mix


Feather-Fibre mix