A method of forming of an article of footwear, comprising: providing a transition strip that has an outer perimeter edge, an inner perimeter edge, and a width between the outer perimeter edge and the inner perimeter edge, the inner perimeter edge defining an internal opening of the transition strip; providing an inner strobel that has an outer perimeter edge; positioning the inner strobel in an overlapping relationship with the transition strip to provide an overlapping region between the outer perimeter edge of the inner strobel and the inner perimeter edge of the transition strip, and a non-overlapping region that extends from an outside boundary of the overlapping region to the outer perimeter edge of the transition strip; temporarily attaching the inner strobel to the transition strip at the overlapping region; securing the transition strip to a bottom portion of an upper, the transition strip being attached to the upper at the non-overlapping region and with the inner strobel facing an inner portion of the upper; fixedly attaching the transition strip and bottom portion of the upper to a sole structure; and separating the inner strobel from the transition strip and removing it from the inner portion of the upper, wherein the transition strip is secured to the bottom portion of the upper by stitching the bottom portion of the upper to an area adjacent the outer perimeter edge of the transition strip, wherein fixedly attaching the transition strip and bottom portion of the upper to the sole structure comprises: applying a bonding material at an attachment area, the attachment area including a location where the transition strip is secured to the bottom portion of the upper; and contacting the bonding material with an upper surface of the sole structure to secure the upper and the transition strip to the sole structure, wherein the attachment area does not include an area of the overlapping region where the inner strobel is temporarily attached to the transition strip. providing a transition strip that has an outer perimeter edge, an inner perimeter edge, and a width between the outer perimeter edge and the inner perimeter edge, the inner perimeter edge defining an internal opening of the transition strip; providing an inner strobel that has an outer perimeter edge; positioning the inner strobel in an overlapping relationship with the transition strip to provide an overlapping region between the outer perimeter edge of the inner strobel and the inner perimeter edge of the transition strip, and a non-overlapping region that extends from an outside boundary of the overlapping region to the outer perimeter edge of the transition strip; temporarily attaching the inner strobel to the transition strip at the overlapping region; securing the transition strip to a bottom portion of an upper, the transition strip being attached to the upper at the non-overlapping region and with the inner strobel facing an inner portion of the upper; fixedly attaching the transition strip and bottom portion of the upper to a sole structure; and separating the inner strobel from the transition strip and removing it from the inner portion of the upper, wherein the transition strip is secured to the bottom portion of the upper by stitching the bottom portion of the upper to an area adjacent the outer perimeter edge of the transition strip, wherein fixedly attaching the transition strip and bottom portion of the upper to the sole structure comprises: applying a bonding material at an attachment area, the attachment area including a location where the transition strip is secured to the bottom portion of the upper; and contacting the bonding material with an upper surface of the sole structure to secure the upper and the transition strip to the sole structure, wherein the attachment area does not include an area of the overlapping region where the inner strobel is temporarily attached to the transition strip. applying a bonding material at an attachment area, the attachment area including a location where the transition strip is secured to the bottom portion of the upper; and contacting the bonding material with an upper surface of the sole structure to secure the upper and the transition strip to the sole structure, wherein the attachment area does not include an area of the overlapping region where the inner strobel is temporarily attached to the transition strip.