Patent ID: 8567559

Claim:
A fabric structure comprising: (a) a plurality of ground yarns that form a sheath and that extend in a substantially warp direction; (b) a plurality of elongation yarns that comprise partially oriented yarns and that extend in the substantially warp direction, wherein the plurality of ground yarns and plurality of elongation yarns are woven to form: (i) a first connection segment in which the plurality of ground yarns and at least some of the plurality of elongation yarns are interwoven together; (ii) a first expansion segment adjacent to the first connection segment in which the sheath surrounds at least some of the plurality of elongation yarns but does not surround substantially all of the plurality of elongation yarns; (iii) a second expansion segment in which the sheath surrounds substantially all of the plurality of elongation yarns; and (iv) a second connection segment adjacent to the second expansion segment in which the sheath surrounds substantially all of the plurality of elongation yarns and in which the plurality of ground yarns and the plurality of elongation yarns are interwoven together, wherein there are more elongation yarns within the sheath in the second expansion segment than in the first expansion segment.