Plus Size Airy Cool Spandex Women's Skimmies Slipshort Yoga Boxer Briefs As summer weather can be hot and sticky happy thigh underwear have been designed to stay in place. Since the underwear doesn't more around, the skin will not be irritated and will not lead to chafing. Skin stays cool during hot weather. The nature material keeps you cool in summer and warm in winter. As an extra benefit happy thigh underwear will keep you warm in winter. The nature fabric helps the body regulate body temperature. Waist : 30 ~ 42 inches : FREE SIZE , Elastic Super Spandex materials!