45 mm at the head, 48 through the upper section, 50 at the lower — three numbers within five millimetres of each other, which means it is effectively one width the whole way along. Consistent rather than contoured. Silicone. Useful if changing diameter is the thing you would rather avoid.
Stay with water-based lubricant, since silicone loses its smoothness against a silicone formula.
Wash it after use with warm water and a soap that has no perfume in it, then dry it off.


































