Kuro Knot Vest ISAYA Knot Detail Vest KNOT VEST TOP BLUE Loose Sleeveless Asymmetric Knot Solid Color Round Neck Vest Top Vest. The KURO KNOT VEST features a 1 4 diagonal opening, and is easy to be secured with two knot closures. COMPOSITION: Wool blend Suiting MAINTENANCE: Machine wash on a delicate or cold gentle cycle. Avoid tumble drying. Air dry flat to maintain shape. Iron on low heat or steam gently. Avoid direct high heat.