The ECCO M BIOM® Hybrid 4 BOA is made in durable ECCO leather with a micro-perforated embossing and GORE-TEX waterproof technology to keep your feet dry even in wet weather. The new ECCO MTN GRIP outsole features our signature FLUIDFORM™ Technology, as well as a smart-looking PU midsole with TPU inserts on either side that securely hug your foot and offer added stability while you're on the green. The elevated appearance and understated design will ensure you look good on and off the course.