Flash is a Sportswear company in Argentina.
These Shorts are multifaceted as you can wear theme to train in
as well as doing water sports, ie polo or surfing.
Some shorts have a white hem trim versus black.
Some have a different color Lycra in the front area- Black, Navy or maybe Royal.

Has a 3-4" wide waste band and a lycra front split as shown.
XL side seam 16 1/2in from bottom hem to bottom of waistband.
Waistband is 3 3/4 wide. Inseam is 6in.

MADE IN 1.5MM NEOPRENE WITH GREAT COMFORT AND THERAPEUTIC COLOR. 
IDEAL FOR PROTECTING YOURSELF FROM THE COLD. 
HELPS PREVENT  MUSCLE CONTRACTURES AND TEARS IN SPORTS TRAINING