Material: 90% Polyester+10% Spandex
This Women’s Sauna Sweat Vest, absorbs moisture and  is a must-have for women who enjoy versatile workouts.It also Features:
*Polyurethane coating that is designed for a comfortable feeling and it also stretches.
*Wide strap that can support your bust well and can be worn with a bra.
*High back detail, shapes and smooths your back and underarms;
*Zipper front is easy for you to wear and take off. 
*Sweat Vest uses an advanced composition of spandex and polyurethane so your core temperature rises and you get results FAST.