Most Eclipse t shirts are cotton/polyester blends—commonly 60% cotton / 40% polyester. Some listings use a 50% cotton / 50% polyester blend.
Eclipse t shirts are offered in men's, women's, and men's big-and-tall sizing. Fits are typically listed as casual or loose for unisex/male styles, with some women's items described as a fitted (junior) style.
Some Eclipse t shirts are printed with water-based inks, and several listings note that printing is done in the U.S.A. Certain styles also specify officially licensed printing.
Care guidance varies by listing: many recommend machine washing and tumble drying, while at least one advises machine wash with line dry or lay flat to dry.
Most Eclipse t shirts are short-sleeve pullovers with a crew neckline.
Graphics range from solar-eclipse and earth/nature motifs to outer-space and pop-culture designs.
Length listings vary: many tees are described as 'at waist,' while some styles are listed as 'at hip.'