Lanvin Men's Footwear Size Chart Lanvin™ Mock Neck Long Sleeve Blouse front button-closure. Long sleeves. Button-closure cuffs. Mock neckline. Classic fit silhouette. Straight hem. 65% wool, 35% silk. Dry clean. Made in France. This item may ship with an attached security tag. Merchandise returned without the original security tag attached or a damaged tag may not qualify for a refund.