Credit to Chenzy and Zenkoina for doing the research on hat weight and compiling this list of free hats for us

These hats are allowed to use within runs. Any hat that isn't on this list isn't allowed, even if it has the same weight to avoid verifiers having to check themselves.

This hats are solely used with the intention to get a greater fling in W9 from the TV explosions, called Super TV skip.

Game made by Zenkoina used to test hat weight https://www.roblox.com/games/5751090298/Hatweight-tester

It is recommended you create a costume with all of the below items to perform Super TV skip. https://www.roblox.com/catalog/617605556/Medieval-Hood-of-Mystery https://www.roblox.com/catalog/1103003368/Orange-Beanie-with-Black-Hair https://www.roblox.com/catalog/417457461/ROBLOX-R-Baseball-Cap https://www.roblox.com/catalog/3403874988/The-Encierro-Cap https://www.roblox.com/catalog/4619597156/Happy-New-Year-Rat https://www.roblox.com/catalog/376527115/Jade-Necklace-with-Shell-Pendant https://www.roblox.com/catalog/376527500/Orange-Shades

These are some extra free items you can get, but may be lighter than the already presented alternatives. https://www.roblox.com/catalog/376548738/Brown-Charmer-Hair https://www.roblox.com/catalog/607700713/Roblox-Logo-Visor https://www.roblox.com/catalog/63690008/Pal-Hair https://www.roblox.com/catalog/451220849/Lavender-Updo https://www.roblox.com/catalog/62234425/Brown-Hair https://www.roblox.com/catalog/376526888/Straight-Blonde-Hair https://www.roblox.com/catalog/376526673/Stylish-Aviators