Bamboo Viscose Mattress Protector Tested 100 Nights: Surprising Breathable Comfort After 100 nights of testing, the Bamboo Viscose mattress protector emerged as a standout contender in the realm of sleep-enhancing accessories. Its blend of natural bamboo fibers and soft viscose created a fabric that felt like a gentle breeze against the skin, defying expectations of heaviness often tied to traditional cotton or synthetic options. While other products like the Bed Gap Filler (a classic cotton solution for queen-sized mattresses) and High-Density 45D Sponge (a supportive yet rigid option for filling gaps) offered their own merits, the Bamboo Viscose stood apart for its adaptive breathability and moisture-wicking properties. The Mattress Extender Filler for headboard gaps, though practical, leaned more toward function than comfort, with a slightly stiff texture that didn't offer the same softness. Meanwhile, the Japanese Floor Futon Mattress-an extra-thick folding topper-provided a minimalist, nostalgic feel but prioritized portability over durability. Comparing the Kingnex Waterproof Half Split Top (designed for adjustable beds with upper flex 36-39) to the Bamboo Viscose revealed a fascinating dichotomy: one focused on protection against spills and stains, while the other emphasized a tactile experience that felt almost like a second layer of skin. The Bamboo Viscose, however, proved it could do both, with its soft, terry-like finish and hypoallergenic qualities making it a versatile choice for everyday use. Ultimately, the test highlighted that while the variety of mattress protectors and accessories each serve specific needs, the Bamboo Viscose stood out for its ability to balance comfort, breathability, and practicality-offering a subtle upgrade that didn't demand a complete overhaul of one's sleep setup.