Due to the common nature of the butterfly save, certain styles have been named based on the commonality of an individual goaltender's use of the butterfly. Common (but not exclusive) attributes of profly/blocking goaltenders are those have wide butterflies, use stiffer leg pads (often with no knee breaks), and tendencies to cover the lower portion of the net. Goaltenders who use the butterfly as the base of the majority of their saves are commonly referred to as "profly" or blocking-style goaltenders. Profly goalies tend to modify their save techniques to take up as much net as possible and leave shooters with the smallest space possible to shoot at. Profly goaltenders tend to also be very mobile when in the butterfly stance and excel at using butterfly-based movement techniques such as butterfly crawls and butterfly slides to move. NHL goaltenders such as Marc-André Fleury, Henrik Lundqvist and Roberto Luongo fit into the profly/blocking style of goaltending.