We ordered suits from a brand made of nylon and lycra.  Those suits stretched or became see-through within the first month.  Most of the staff act as a lifeguard/instructor, so it was important for us to have suits that lasted a long time.  Mine faded immediately and I opted to order this one.  I LOVE IT!  I had ordered a swimsuit from the finals a view years previou and it lasted about a year and a half before it finally started to stretch.  It fits like a glove, I'm 5'9" pounds with curvy hips and chest, so I always have trouble fitting one or both areas.  Sometimes polyester doesn't fit very nicely, but lasts long, so you have to settle.  Not with this suit :D