BikeParka - Bike Covers - XL/MTBOverview XL MTB, A super sized cover for mountain bikes and those with wider handlebars or child seats. Light and breathable, yet engineered for tough protection against rain, snow and ice. Our technology ensures your bike will be snug, dry and clean even in the harshest of weather. Designed for use at home. In your garden, on your balcony, by your railings. It also keeps your bike tidied away inside and protected from dust. Or pack it in the Stuff