Gutermann 100% Cotton thread is made from the highest quality 100% Egyptian 3 ply cotton. Consistent and strong, this thread has a silk-like luster. Gutermann 100% Cotton Thread 800M Aqua Marine This thread is a fine cotton thread but strong with a silky finish for users who prefer to sew with cotton This thread is a fine cotton thread but strong with a silky finish for users who prefer to sew with cotton. Suitable for hand or machine sewing, Gutermann cotton thread is a 100% long staple mercerized cotton sewing thread. All purpose.