Vineyard Vines Martha's Vineyard Performance Vest Mens Sz Medium The Vineyard Vines Martha's Vineyard Performance Vest is a stylish and practical addition to any man's wardrobe. Made with an acetate outer shell material, this medium-sized vest comes in a classic blue color. The vest features a regular fit and a sleek design, perfect for layering over shirts or sweaters for a polished look. Whether you're heading to a casual outing or a more formal event, this vest offers comfort and style.