This 67 in. Stone Resin Flatbottom Solid Surface Freestanding Soaking Bathtub in White with Drain is crafted from durable high-quality aluminum powder and Solid Surface Stone binder (PMMA+MMA+UPR). With proper maintenance indoors, it can provide 5-8 years of use due to its hard material and high toughness. Its low heat transfer coefficient allows for better insulation and slower dissipation of heat, resulting in a more comfortable soaking experience. Additionally, this bathtub has excellent resistance to discoloration and yellowing from light exposure, and can easily be cleaned with a damp cloth and mild neutral cleaner. However, due to its weight, it is recommended that 4 to 6 people carefully carry it into your home and handle it gently to avoid damage.