sen Beckett Blouse in White. - size XS (also in ) sen Beckett Blouse in White. - size XS (also in ) 100% poly. Hand wash cold. Sleeve cut-outs. Front knot detail. Shirttail hem. Back keyhole with button closure. SEN-WS177. BECKETT. Delicate washed silks and fashion forward ingenuity are what make Sen elegantly simplistic. Focusing on classic and easy silhouettes with a modern sensibility, this Miami-based brand will integrate into your existing wardrobe with ease.