4 inches in diameter with a 440-pound weight limit

Sizing Chart

Draft-flap snaps keep jacket in place if you unzip for ventilation

A heavy-duty vinyl coated headband is also resistant to damage

Under Armour Seamless Stride Short Sleeve Women's Size:XS 4 inches in diameter withUsing levels of mesh mapped to your body, the Under Armour Seamless Stride Short Sleeve gives you ventilation where you need it. Fewer seams give you distraction free comfort during your activities. New, softer knit fabric with engineered mesh ventilation, mapped to the places you need it most Nearly sew free construction to eliminate chafing Material wicks sweat & dries quickly Anti odor technology prevents the growth of odor causing microbes