It is important to be aware that some mattresses in a box may contain fiberglass. Research conducted by Consumer Reports found that out of 24 tested models, five had fiberglass included. Popular brands such as Nectar, Leesa, Zinus Allswell, Ashley Furniture Industries and some Tempurpedic models have been found to include this material.

While these mattresses may still be safe if handled properly with gloves, it's crucial for consumers to know about the potential risk. To avoid purchasing a mattress with fiberglass or other harmful materials, it's recommended to research the brand's manufacturing processes and materials used beforehand. Always read product labels and packaging carefully before making a decision.

Replacing your current mattress can also be an effective solution if you're experiencing discomfort or pain during sleep. According to Sleep Foundation data gathered from over 15,000 individuals worldwide across various age groups and locations- participants reported less back pain (57%), less shoulder pain (60%), less hip pain (62%) as well as better sleep quality scores by more than 60% after replacing their old mattress.

Overall, while proper due diligence should aim at minimizing exposure to any chemical fibers released off-gasses emitted from furniture/mattress products - especially when chronically exposed via long-term usage within indoor living environments; keeping oneself informed about top-rated/verified products' design details enables an individual in selecting healthier alternatives which aligns best with their lifestyle choices/preferences.