シアサッカー タックハーフスリーブシャツ

It looks like you are referring to a specific product, the "THE Yon シアサッカー タックハーフスリーブシャツ," which seems to be a Japanese item. "シアサッカー" refers to "seersucker," a lightweight fabric with a crinkled texture, and "タックハーフスリーブシャツ" translates to "tack half-sleeve shirt."
If you're looking for more information about this product, such as its features, availability, or where to buy it, please let me know!