|This article needs additional images. You can help out Hexxit Wiki by adding images to the site and adding them to the article.|
Cobweb is a block added by vanilla Minecraft.
The cobweb block will slow entities that fall in it, it will cancel all fall damage if landed on before hitting the ground, unless four or more blocks are fallen again. It takes an undocumented amount of time to break by hand but is much faster if done with a sword.