Cellular structures

A cellular structure, comprising:

• a plurality of interconnected cells of fabric material, the cells are formed from a single strip of fabric material folded back and forth on itself, and wherein adjacent parts of the strip are bonded to each other at spaced apart locations and the cells being filled with (i) a first fill material comprising a composite fill material comprising a mixture of first particulate material and a bonding agent, wherein the bonding agent bonds together the first particulate material and/or bonds the composite fill material to the fabric material, and (ii) a second fill material comprising a second particulate material, wherein the second particulate material is the same or different from the first particulate material and the second fill material is devoid of a bonding agent;
• wherein the plurality of interconnected cells have a top edge and a bottom edge defining a z-direction therebetween for each cell, and wherein the composite fill material defines a lowermost layer and an uppermost layer along the z-direction, and the second fill material is confined between the lowermost layer and the uppermost layer.