A removable and flexible protective cap that is configured and dimensioned to stretch and slip over fixed camera lenses, detachable camera lenses and other tubular-shaped objects. The protective cap fits on objects having different diameters. The protective cap further includes integrated bumpers to provide improved protection against impacts. The protective cap has a memory such that when it is removed from a lens, it returns to its original shape. The protective cap may include a lint-resistant feature to prevent lint and dust from adhering to the cap. The protective cap is particularly suited for lenses used in photography, videography, hunting, military, and astronomy. The protective cap is also suited for use on non-optical devices, including gun barrels. In addition, the protective cap is suitable for use on other tubular-shaped objects.