ZUM SC ULTIMATE for iPad 2- frost Smart Cover Lock interlocks your iPad2 and Smart Cover. Innovative custom molding production process results in Sleek and Seamless fits. Ultra thin & Lightweight. Only 1mm diameter of ultra strong protection. weighing only at 2 ounces Satin Velvety Touch finish - Grip with confidence and elegance. Ultra durable ZUM engineered polycarbonate for added protection against scratches and dents.