BATON ROUGE, La.--(BUSINESS WIRE)--Seersucker, the essential summer-time fabric, will get a moment in the sun on National Seersucker Day, set for Thursday, June 11. Haspel, the men’s brand that invented and popularized the seersucker suit in 1909, encourages everyone to wear their summer finest on that day and support a long-standing tradition in American menswear. Haspel is the first name in seersucker. More than 100 years ago Joseph Haspel Sr realized the puckered cotton cloth (originally use