- Bring your shoes back to life! The Muc-Off Premium Footwear Shield is an epic environmentally-friendly spray-on treatment that’ll dial up the water repellency levels of your shoes, giving your feet the ultimate protection for your next ride or adventure, no matter how gnarly it gets. The Footwear Shield works in a very similar way to the Rain Shield DWR to create a durable water repellent on the surface of the shoe. We use an advanced polymer technology as the basis of our footwear shield. We then combine this with a range of silicone and wax emulsions to ensure our product is as versatile as possible and can be used on a range of different materials. Additionally, this blend of repellents provides the best solution to getting a repellent finish when air-dried. *Check your shoe manufacturer care instructions before use.