ECCO BIOM AEX Womens Knit Slip-OnDesigned with active women in mind, the ECCO BIOM AEX is made from durable yak leather and a fine knit textile. It features an elastic band across the vamp for a secure and street style fit that's easy to throw on and go. Seamless detailing along the toe and an ultra comfortable PHORENE midsole deliver elevated design elements and incomparable walking comfort. Crafted from durable, full grain yak leather Breathable and fine knit textile construction