Chelsea Boot silhouette. Tonal elasticated side gores. Branded Blundstone tongue and heel pull. Unlined. Contoured EVA Insole with XRD Technology. 100% Premium leather upper. TPU Outsole With PU Midsole. Unisex. Brand Restrictions At Stuarts. Stylist Notes. The #519 distinctive olive green elastic side panels are set against dark brown leather uppers. The anatomically shaped PU midsole is designed for comfort, while the TPU outsoles are hard-wearing and provide stability. The removable and replaceable EVA footbeds add extra comfort. The #519 combines Blundstone practicality with contemporary looks.