∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] {V : Type u₂} [inst_1 : CategoryTheory.Category.{v₂, u₂} V]
  [inst_2 : CategoryTheory.MonoidalCategory C] [inst_3 : CategoryTheory.MonoidalCategory V]
  {F G : CategoryTheory.MonoidalCategory.DayFunctor C V} [inst_4 : SizeOf C] [inst_5 : SizeOf V]
  (natTrans : F.functor ⟶ G.functor), sizeOf { natTrans := natTrans } = 1 + sizeOf natTrans