Lanvin Men's Footwear Size Chart Lanvin™ New Biker zippers at ankles. Button front with zip-fly closure. Belt loop waist. Front zipper hand pockets. Straight leg silhouette. Back zipper pockets. Flat front. 51% cotton, 49% wool. Dry clean. Imported. 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.