Polyester SLEEP SOUNDLY IN THE SAME ROOM: SlumberPod creates a dark and private sleep nook to help make room sharing with littles less stressful and more restful. Our breathable blackout fabric blocks 95%+ of light supporting better sleep. Perfect for travel and at-home room sharing. FEATURED ON SHARK TANK: SlumberPod is the original, patented blackout sleep tent invented by a mom and daughter duo and featured on Shark Tank Season 11. Loved by over 300,000 families worldwide. Choose the authentic original, beware of inferior imitations.