How is the seamless thermal-bonded seam sealing mentioned in the description different from regular stitching?

Seam sealing is a finishing technique that joins fabric seams by melting adhesive tape with heat and pressure instead of needle and thread. While regular stitching overlaps and sews fabrics together, leaving protruding seams, the thermal bonding method attaches where the two fabrics meet smoothly and flatly.

When your arms and torso continuously touch while running, protruding seam lines can easily rub against bare skin and cause chafing. PLAKNIT applied this seamless thermal-bonded seam sealing to the neckline, shoulder line, and armhole areas that touch the underarms on the sweat-free singlet and sweat-free crop singlet^[1][2]. It is constructed to reduce the ridge of the seam line at the edges prone to rubbing against skin, allowing you to run without chafing even during long-distance runs^[3][4].