The Knicker won’t ride up because it is has a unique gusset design which works with the back seam to hug your bottom and stay in place. No pinching, no pulling, no riding up. The Knicker has no panty lines. A very fine elastic is covered in stitching to ensure there are no thick ridges round the legs or waist. The Knicker stretches to fit because we have selected a super soft, silky, stretchy micro touch fabric to mould to your shape without restriction.