Noun
weight-saving (uncountable)
An intentional reduction in the weight of an object.
I-Suit The I-Suit is a space suit prototype also constructed by ILC Dover, which incorporates several design improvements over the EMU, including a weight-saving soft upper torso. Source: Internet
Every possible weight-saving measure was incorporated into the design. Source: Internet
The large neck was filled with an extensive system of weight-saving air sacs. Source: Internet