The one that you think of when you think Speedo: these swim briefs are crafted for a comfortable fit and durability with a simple, classic look. Made of polyester and polyester PBT. Endurance fabric is more durable with chlorine resistant and anti-pilling properties to help retain look and shape over a longer period of time. Seamless front with a comfortable amount of space at base. Soft smooth knit lining at front and back. Seamless rear. Covered elastic waistband with drawstrings on interior at front. Leg openings have covered elastic inside hems for fit. Speedo logo on left hip. Fully lined. Flyless.