CSLOL Manager

League of Legends Custom Skins are installed by using an application known as CSLOL Manager by Moonshadow565. Visit the website to download the latest version of this app.
CSLOL Manager

Download Skins

Anyone can create and publish custom skins, as long as they follow the official
Legal Jibber Jabber Policy

Search for this in the terms and conditions or about page of their website before making use of their content to make sure that they follow the rules. Some websites that are verified to follow this policy are:
Skin Empire | League of Legends Custom Skins
RuneForge | Custom Skins
Yoru Queen of Night | League of Legends Custom Skin Creator

Join Skin Empire on Discord if you have any questions regarding custom skins.
https://discord.gg/nRxqxBHjeu