To understand its meaning, we need context. "Capas" can refer to several things:
* Layers of clothing: In this case, "mantener capas" would mean "keep your layers on" or "stay layered up".
* Layers in software or data: If you are talking about software development or data analysis, "mantener capas" could mean "maintain layers" or "preserve layers".
* Layers of a cake or other food: If you are cooking, "mantener capas" might mean "keep the layers even" or "ensure the layers stay intact".
To get a more precise translation, please provide me with the context in which you encountered this phrase.