Details, Size & Fit. The Blue Linen Waistcoat by Jack London will add extra class to your Blue Linen Suit. Made from 100% Linen, this lightweight waistcoat will make you The talk of The town at any formal occasion. Our Model wears a size 50. He is 6’2’’ (189cm) tall, with a 77.5cm waist and 104cm chest. 5 Button Closure Adjustable Buckle Cinch Strap Two Jetted Pockets Dry Clean Only.Material: 100% Linen.SKU: JA108AA19YMU.