32 degrees kids thermal base layer set - size small , black

2 piece base layer set by 32 Degrees is completely Weatherproof. Made to wick away moisture and regulate body temperature, so keeps you warm without making you sweat

 The unique blend of yarns create a luxurious feel and is anti-static and anti-odor. 37% Acrylic, 34% Polyester, 25% Rayon and 4% Spandex. Machine wash cold.

Size small which will cover 4/5 , 6/7 years as they are so stretchy 

super thin so not restrictive at all and can easily be discreetly  worn under a school  uniform