3 for $20! Saks fifth avenue grey button down shirt

Great condition but some flaws. Missing a button in the front. Also missing size/ material & care tag. I think is a size small but please refer to the measurements before purchase. Feels like a linen / linen blend. Sleeves adjustable via button on the side. Bundle with any other 2 listings also marked 3 for $20 to receive offer. Measurements are as follows in inches (flat lay); Armpits: 19 Length: 25.5