A solid contender for life in the fast lane! This classic brief features Nike's newest swim knit, HydraStrong for longer wear, perfect if you spend a lot of time in the pool. Made of polyester and PBT. Inner drawstring is adjustable and adds fit security while active. Center front is lined for comfort and support, with flat-lock seaming around edges for non-chafe wear. Heat transferred "swoosh" emblem at left front side. Low rise. Smooth, seamless rear. HydraStrong tech fabric resists water and salt damage, as well as being heat resistant. Great for competition swimming and training, or just for taking a fun dip! Flyless.