Provided is a cap for an injector comprising a syringe with a needle cover. The cap comprises a cap body defining an inner and outer cap body; provided to the inner cap body, a grip for gripping the needle cover of said syringe; provided to the outer cap body, an opposing pair of recessed portions, wherein each recessed portion defines a recess base, and wherein each recessed portion is bounded by a peripheral lip; and provided to the recess base of each recessed portion, an over-coating. The cap body comprises a generally rigid material and each over-coating comprises a more flexible material. Each peripheral lip defines banks that extend beyond the over-coating of the recess base.