Slumbr Evening MattressSlumbr Evening Mattress in a Box The Slumbr Evening mattress offers a luxurious sleep foundation with its 350gsm knitted fabric cover, providing a plush, breathable, and durable surface. This high quality outer layer keeps the mattress feeling fresh and inviting while promoting airflow and longevity. Directly beneath the cover is a 100gsm Dacron insulation layer, engineered to provide a balanced sleep temperature. This insulation offers warmth during