Rubber!

Added the new armor types with special abilities: the hardened leather boots now offer the player with enhanced jumping power, moving speed, sneaking speed and reduced fall damage; with the full suit of hardened leather, you also gain a shorter burning time and higher swiming speed. Speaking of the infernal armor, with it on, you'll have everything the hardened leather full suit offers, but with fire resistance, higher attack knockback and a higher max hp. Also, added a new rubber soruce- the dandelion, which while not offering as much rubber per plant as the jungle tree, is certainly a more accesible resource.