It is a type of material that stretches and is used especially for making clothes fit tightly.
A4 NB6202 - Youth Polyester/Spandex Compression Tight
Next Level Apparel 3533 - Ladies Spandex Jersey Tank
A4 N6202 - Adult Polyester/Spandex Compression Tight
Augusta 1203 - Girls Polyestyer Spandex Racer Tank
Augusta Sportswear 1258 - Ladies Junior Fit Cotton/Spandex Legacy Tee
Augusta Sportswear 1203 - Girls Poly/Spandex Solid Racerback Tank
Augusta Sportswear 1202 - Ladies Poly/Spandex Solid Racerback Tank
Augusta Sportswear 4815 - Girls Wide Waist Brushed Back Poly/Spandex Pant