There is currently an array of pillow materials available in the market, encompassing EVA, vinyl, PU, memory foam, and other variants. Given that bathtub pillows are not only exposed to water for prolonged periods but also encounter chemical substances like bath salts and endure high temperatures, it becomes imperative to choose materials that possess waterproof, moisture-resistant, corrosion-proof qualities while being capable of withstanding high temperatures. Materials meeting these three criteria include EVA, vinyl, and PU, which are also notably durable with an extended lifespan along with non-toxic and eco-friendly features—ensuring safe usage.

Due to it being difficult to ascertain whether the water stored within the bathtub pillows has evaporated and dried over time, many bacteria could grow undetectably. Prolonged exposure to these bacteria through close facial contact can easily facilitate their entry into your respiratory tract, leading to respiratory ailments. Hence, the wisest action would be to opt for waterproof materials. By preventing water from permeating the pillow's interior, there will be no residual moisture or bacterial proliferation.

Moreover, waterproof materials also offer ease of maintenance. After use, simply place the pillow in a well-ventilated area for natural drying or gently wipe it dry with a cloth—no unnecessary or intricate post-use care is required. However, if you desire an extended lifespan for your pillow, regular cleaning with antibacterial soap or other agents is recommended.

As a brand dedicated to enhancing the finer details and consequently improving lives, we understand that merely providing a pillow to support your cervical spine is insufficient. Particularly for those with severe cervical spondylosis, an ill-fitting pillow that fails to conform to the natural curvature of the neck can transform what should be an immensely soothing experience into one fraught with torment.

In response to this point, numerous businesses in the market employ memory foam to craft bathtub pillows. While it is true that memory foam can effortlessly adapt to any desired support angle to conform with the curvature of your cervical spine, it is prone to deformation and highly susceptible to chemicals, thereby severely restricting the use of bath salts during bathing. Furthermore, memory foam also has a propensity for moisture retention, which fosters bacterial growth. By amalgamating both aspects of aligning with the human cervical spine's curvature and addressing the drawbacks associated with memory foam, we have developed a waterproof circular pillow that impeccably matches the contours of your cervical spine.

Our circular pillow can gently stretch your cervical vertebrae while correcting its curvature to an extent. When utilized in conjunction with prolonged exposure to hot steam, it effectively alleviates muscle soreness and aids in cervical vertebrae recovery. Moreover, we have employed waterproof PU material for designing the outer casing of our pillow, which not only prevents residual moisture from harboring bacteria inside but also ensures long-lasting shape retention. Therefore, if you are already displaying signs or suffering from cervical spondylosis, our circular pillows are absolutely your right choice.