Telephoto sunshades are cylindrical with a thread each on the front and on the end (male/female). Thus they can be attached to prolong them for very long focal lengths.
The short-sunshades are intended for lenses with a focal length of 85mm or longer. From 135mm on the normal version (without the "short"-addition) can be used as well.
Heliopan products which are in stock may be returned within the limits of our customer satisfaction guarantee. All Heliopan products not in stock are made to order by Heliopan upon your order/request. They are specifically made for you and cannot be returned unless they have a defect (ofcourse).