Abstract: A polymeric sheet, at least partially cross-linked and/or foamed, having a substantially open cell foam structure is described. A continuous method of manufacturing of an at least partially cross-linked, open cell foamed polymeric sheet is also described.

Abstract: An exercise device comprising a first foam layer and a second foam layer; wherein the first foam layer has a thickness of between 10% and 35% of the thickness of the exercise device, a Shore 00 value of between 60 and 85; and a compression deflection at 25% of from 100 to 145 kiloPascal; and the second foam layer has a thickness of between 65% and 90% of the height of the exercise device; a Shore 00 value of between 35 and 65; and a compression deflection at 25% between 20 and 75 kiloPascal. The exercise device may further comprise a third foam layer; the third foam layer may have a convex external horizontal side. According to some embodiments, the third foam layer may be detachable affixed to the exercise device. A method for using the exercise device is also disclosed.

Abstract: This invention relates to extruded material having swirled coloured appearance. Two polyolefin mixtures are prepared. The two mixtures are generally the same except that one is of a first colour and the second of a second colour. Each of the first and second mixtures are kneaded in respective dispersion kneaders. The resulting melt from each kneader is cut into random sized pieces. The random sized pieces of the two melts are placed in a hopper of an extruder and the extruder operated to force the random mixture through a die. The resultant product has a first colour with a random swirled pattern of the second colour. The resultant product is then cured.