Rash Guards are tight-fitting athletic tops generally made from lightweight synthetic fabrics that feature moisture wicking properties and are designed to protect the skin from a variety of water sports' related hazards like chafing or sunburn.
About Swim Trunks:
Swim Trunks are shorts for men used for the purpose of swimming. Swim Trunks will often have netting as the liner and a drawstring at the waist for an adjustable fit.