Lanston Side Strap Tank in White. - size S (also in ) Lanston Side Strap Tank in White. - size S (also in ) 50% cotton 50% modal. Slub knit fabric. Cut-out sides with laddered detail. Rounded hem. LANS-WS408. L 1257SL. Lanston is a modern, luxurious and affordable fashion basics collection, that provides timeless pieces in a contemporary market.