1.Prum fabric employed for extra softness while being skin-friendly. Resehed & tried fabric mix renders no show sos wear & tear resistant staying in shape after wash.2.Extremely breathable cotton Non-Slip low cut sos come with specially designed mesh for swift ventilation of heat and moisture after whole days wear.3.High density knitting to make sure athletic no show sos durable, each thread meticulou stitched to avoid loose or frayed threads.Womens invisible sos fit shoe sizes ranging from 5-10, perfect match for most sneakers, casual wear and canvas shoes etc.4.Non bulky, thinner sos made for all sorts of s like jogging, working out, yoga, tennis, squash etc ; 5.Soft to touch and light to wear, ideal for whole days s/casual wear or intense workouts.