Buy More and Save! All $21 undies are 3 for $48. Super soft and stretchy brief. Fuller coverage brief shape that is made of a sustainable blend of Tencel™ Modal and elastane. Super soft Tencel™ Modal is breathable and comfortable. The fabric and elastic trim are stretchy, allowing for dual-sizing. Tencel™ Modal is a sustainable fiber from renewable wood sources. Special flat sewing technique with extra soft thread is used on seams and to attach the elastic, to minimize show-through under clothing. Cotton lined gusset. The best smooth seamless full brief!