●LIGHTWEIGHT & FRESH - super lightweight, ultra breathable and wicking fabric moves sweat away, feel smooth against your skin ●COMFORT & STRETCH - move comfortably with 4-way stretch, gusseted crotch and chafe-free flatlock seam construction ●STREAMLINED FIT - sits perfectly under your clothing without adding any bulk, wide elastic waistband brushed for next-to-skin softness ●EXTRAS - UV protection keeps out harmful rays, back reflective logo keeps you visible in low light conditions ●Great to wear at home or add an extra layer of warmth under your clothes, perfect for indoor/outdoor winter activities.