Thanks to a special membrane that is permeable to vapour but impermeable to water, rubber outsoles are able to breathe and leather outsoles remain waterproof. The Geox men's low-cut sneakers with a super-breathable design. A faultless fusion of style and practicality, Nebula is an iconic piece of footwear created with everyday routine in mind, it offers exceptional levels of comfort and breathability. A highly wearable piece of footwear that delivers superior comfort levels.