Polymer material is an important resource in Stellar Blade, especially if you want to fill out Eve's wardrobe with all the unlockable Nano Suits.
How to Farm Extreme Polymer Materials in Stellar Blade
The threat of Stellar Blade's Naytiba is one thing, but not having enough Polymer Material and Nano Elements is another story. After all, if you don't have enough Polymer Material, you can't buy new Nano Suits, just not the Skin Suit.
You're introduced to Polymer Material pretty early on, and there are three types of Polymer in Stellar Blade: Polymer Material, Advanced Polymer Material, and Extreme Polymer Material. Each of these are used to craft new Nano Suit recipes, so let's maximize your Polymer earning potential.
You can obtain Polymer in abundance by opening crates throughout Stellar Blade, purchasing it from merchants in Xion, and finding it in the open.