A seat back for an office chair includes a knit material for extending over a structural frame. The knit material can be formed in a single knitting operation to include cushioning characteristics that vary across different regions of the knit material. The knit material may be a weft knit material having a first layer, a second layer, and a third layer, wherein the third layer is inlayed between the first and second layers and the inlay material is different from at least the first and second layers and provides a degree of cushioning between the first and second layers. The first and second layers are knit according to a predetermined pattern, the predetermined pattern determining crossing lines where the first and second layers cross one another and fix the third layer in position with respect to the first and second layers. The predetermined pattern is differentiated between regions of the back support, such that a first region of the back support has a higher density of crossing lines than a second region of the back support, the first region providing a different degree of cushioning than the second region.

A patient interface includes a positioning and stabilising structure having a knitted headgear strap comprising physical properties and/or characteristics that vary across the headgear strap. The entire headgear strap or portions thereof may be knitted as a single piece of material directly into its final shape. The variations in physical properties and/or characteristics may be provided by different knit structures and/or textile compositions.

A patient interface comprises a cushion assembly including a textile membrane. The textile membrane includes an air impermeable silicone layer applied to a textile material. The textile material comprises 1) nylon and/or polyester, and 2) elastane. A yarn count of the nylon and/or polyester is in a range of 20-80 denier, and the textile material has stretchability in both a direction of the wales and a direction of the course.

A patient interface comprises a cushion assembly including a textile membrane. The textile membrane includes an air impermeable silicone layer applied to a textile material. The textile material comprises 1) nylon and/or polyester, and 2) elastane. A yarn count of the nylon and/or polyester is in a range of 20-80 denier, and the textile material has stretchability in both a direction of the wales and a direction of the course.

An upper for an article of footwear may include a knitted component having an auxetic portion. The auxetic portion may be configured to move between a first position and a second position as the knitted component stretches. The knitted component may also include a tensile strand inlaid within at least one of a course and a wale of the knit element, where the tensile strand extends through the auxetic portion, and where the tensile strand is selectively securable to the knit element via a securement device. The securement device may be spaced from the auxetic portion.

An upper for an article of footwear may include a knitted component having an auxetic portion. The auxetic portion may be configured to move between a first position and a second position as the knitted component stretches. The knitted component may also include a tensile strand inlaid within at least one of a course and a wale of the knit element, where the tensile strand extends through the auxetic portion, and where the tensile strand is selectively securable to the knit element via a securement device. The securement device may be spaced from the auxetic portion.

A method of manufacturing an at least partially knitted artifact (4) includes knitting at least one multilayer fabric sheet (8) having at least a first layer (12) made with a first yarn (14), of animal, plant, synthetic and/or artificial origin, and at least a second layer (22), made with a second, heat-shrinking yarn (24). The first and second layers (12, 22) being at least partially interconnected in respective knitting stitches (28), during the knitting operation. The multilayer fabric sheet (8) is shaped according to a predefined shape. The multilayer sheet (8) is subjected to heat treatment to obtain predefined shrinkage of the second heat-shrinking yarn (24) and a dimensional stabilization of the sheet. The second yarn (24) forms a bearing structure of the multi-layer sheet (8) and the multilayer sheet (8) is assembled to form the artefact (4) by stitching and/or gluing edges of the dimensionally stabilized sheet.

A method of manufacturing an at least partially knitted artifact (4) includes knitting at least one multilayer fabric sheet (8) having at least a first layer (12) made with a first yarn (14), of animal, plant, synthetic and/or artificial origin, and at least a second layer (22), made with a second, heat-shrinking yarn (24). The first and second layers (12, 22) being at least partially interconnected in respective knitting stitches (28), during the knitting operation. The multilayer fabric sheet (8) is shaped according to a predefined shape. The multilayer sheet (8) is subjected to heat treatment to obtain predefined shrinkage of the second heat-shrinking yarn (24) and a dimensional stabilization of the sheet. The second yarn (24) forms a bearing structure of the multi-layer sheet (8) and the multilayer sheet (8) is assembled to form the artefact (4) by stitching and/or gluing edges of the dimensionally stabilized sheet.

An upper for an article of footwear includes a knitted component having unitary knit construction. The knitted component has a base portion configured to be disposed adjacent the sole structure. The knitted component also includes one or more side portions that extend from the base portion. Furthermore, the knitted component can have at least a first edge and a second edge that are joined at a seam to define a void that receives a foot. Additionally, the upper can include a tensile strand that extends through a passage defined between an exterior surface and an interior surface of the base portion.

An upper for an article of footwear includes a knitted component having unitary knit construction. The knitted component has a base portion configured to be disposed adjacent the sole structure. The knitted component also includes one or more side portions that extend from the base portion. Furthermore, the knitted component can have at least a first edge and a second edge that are joined at a seam to define a void that receives a foot. Additionally, the upper can include a tensile strand that extends through a passage defined between an exterior surface and an interior surface of the base portion.