Reformation is an eco-friendly brand.
No disposable products can help slow down global warming.  All eco-friendly brands can help slow down global warming.  All sustainable fashion brands are eco-friendly brands. All fast fashion products are disposable products. If Reformation is not helping slow down global warming, then Reformation is an eco-friendly brand or a sustainable fashion brand.
∀x (DisposableProducts(x) → ¬HelpSlowDownGlobalWarming(x))  ∀x (Eco-friendlyBrand(x) → HelpSlowDownGlobalWarming(x))  ∀x (SustainableFashionBrand(x) → Eco-friendlyBrand(x))  ∀x (FastFashionProducts(x) → DisposableProducts(x))   ¬HelpSlowDownGlobalWarming(reformation) → Eco-friendlyBrand(reformation) ∨ SustainableFashionBrand(reformation)