Size 1X Henley shirts are a great alternative to t-shirts and can shake up your casual style. They are named after the English town of Henley-on-Thames and were originally the uniform of rowers participating in the Henley Royal Regatta in 1839. Henley shirts are versatile and can be worn on their own in warm weather or layered in the winter. They can be dressed up or down depending on the occasion and are a great blend of casual and dressy.