This price is for an kids polypropylene thermal, new in original packaging.
Polypropylene makes these kids thermals extremely warm.
Its "Wickability" draws moisture and perspiration away from the skin transferring it to the next layer, retaining a warm layer of air next to the skin.
The low thermal conductivity means better insulation keeping you warmer for longer periods.
Because polypropylene is moisture repellent, a wet garment dries quickly. These polypropylene thermals are extremely lightweight. Polypropylene is only 70% of the weight of an equivalent wool garment. Keeps you warm and dry