The Elytra Wings Mod adds an item which can be used to glide from higher grounds such as jumping off a cliff and then safely glide to the ground. The best things about this mod is the beautiful animation which really boosts the entire experience.
How to glide?
The Elytra wings (ID: 501) can only be obtained through the creative inventory or if you are in survival mode by using some type of commands or inventory mod.
Hold the wings item in your hand to start gliding. It takes a little time to get used to the controls because it works differently from normal flying in creative mode. Even if it's more difficult to glide than flying it looks a whole lot more cool.
For optimal experience find a mountain, put on the wings (by holding the item in your active hand) and jump off the mountain to glide.