Will seat covers work with heated and ventilated seats?

Owner reports on subreddits like r/chevycolorado note that heated seats still function under perforated leatherette covers like Coverado's, but warm-up takes longer. Ventilated/cooled seats are a different story: most universal covers block airflow significantly. If cooled seats are a must-have, look for perforated or mesh-backed designs and expect reduced effectiveness.