Yes, you can use a Slumberpod over a SNOO, and it is a popular, effective combination for creating a dark, portable sleep environment for babies. Many users find it a "game changer" for travel or room-sharing, allowing parents to keep lights on while the baby sleeps. It fits comfortably over the SNOO and is often used together. 

Important Considerations for Using SlumberPod with SNOO:

• Airflow: It is highly recommended to use a fan (such as the SlumberPod fan or a small, safe clip-on fan) inside the SlumberPod to ensure proper air circulation, especially when covering a fully enclosed, non-mesh, or partially mesh structure like the SNOO.
• Compatibility: While SlumberPod is designed for pack-and-plays, it is large enough to fit the SNOO footprint.
• Safety: The SlumberPod is generally recommended for infants 4 months and older, though many parents use it earlier for room-sharing, ensuring they check for proper airflow.
• Alternative Uses: If using during the day for naps in a bright room, the zipper can be left partially open to allow some light in while still providing a cozier environment. 

For the best experience, ensure the SlumberPod is set up correctly and used with the recommended fan to maintain a safe, comfortable temperature.