The present disclosure provides various embodiments of a sheath for a rotational intravascular probe for insertion into a vasculature. An exemplary sheath includes a flexible portion having a lumen for receiving an ultrasound probe, a distal portion that includes a flexible multi-layer tip, and a transition portion that couples the proximal portion and the distal portion. The multi-layer tip defines a guide wire lumen having a distal guide wire opening and a proximal guide wire opening through a sidewall. In some embodiments, an area between the proximal guide wire entry opening and the flexible proximal portion is supported to prevent kinking and prolapse.
