Cotton T-400

Four Hundred thread-count cotton fabrics are soft and breathable, with a lighter weight than the T-600 fabrics, and a bit more durability.  At this thread count, the individual threads become much finer, and in some cases, the cloth becomes lighter as a result.   This fabric is a good middle ground between the exquisite softness of the T-600 fabric, and the better durability of the T-300 Cotton.  It is usually available in a wide variety of colors.