Check this Monster Hunter World: Iceborne guide on how to unlock Waterproof Mantle! Know the effects of Waterproof Mantle and which quests you need to complete with this guide!
Waterproof Mantle - Effects & How To Unlock
Waterproof Mantle Equipment Info
Waterproof Mantle Effects
Reduces water damage, nullifies waterblight, reduces mobility restrictions in muck and negates them entirely for deep water.
Waterproof Mantle Usage Info
Waterproof Mantle - How To Unlock
Deliver 1500 Reasearch Points, 3 Jyurantodus Scale+, 1 Jyurantodus Fin+ to clear Deliveries - Armor R&D: Waterproofing. Then, speak with the smithy.
Waterproof Mantle - How To Use
Counter Monster's Water Attacks
The Waterproof Mantle reduces the damage taken from water elemental attacks such as Jyuratodos. Increase your chances of survivability by equipping this beforehand when undertaking quests against water monsters
Even the Odds in Deep Water Areas
Water element monsters such as Jyuratados are often fought around areas of deep water. Wading through deep water increases the vulnerability of hunters as dodging is slower. This disadvantage can be countered with the Waterproof Mantle.
Mad Against Muck
Jyuratados and Barroth both have attacks that greatly reduces the hunter's movement by slinging mud across the field. A good way of countering this is by simply equipping the Waterproof Mantle, ensuring immunity against these muck attacks.