SPANX Thinsticts® 2.0 Mid-Thigh Shorts. Retail $58. The Spanx Thinstincts 2.0 Mid-Thigh Short in black is a slimming undergarment designed to help smooth and shape your silhouette. The mid-thigh length provides full coverage and helps prevent chafing, while the ultra-thin, breathable fabric ensures you stay cool and comfortable. With targeted shaping and support to your tummy, hips, and thighs, this short is perfect for wearing under skirts, dresses, and pants to achieve a seamless and flattering look. NEW with hygienic liner.