The choice of materials in adult products directly impacts user health and safety. Currently, the mainstream safe materials in the market include medical-grade silicone, borosilicate glass, and 316 stainless steel. These materials share common characteristics: chemical stability, non-toxicity, non-allergenic properties, and smooth, non-porous surfaces that effectively prevent bacterial growth. In stark contrast, PVC and ordinary TPE materials used in some cheap products may not only release harmful substances but their porous structures can easily become breeding grounds for bacteria. When making purchases, consumers should prioritize products that clearly label material components and remain cautious of products with vague descriptions such as "premium soft rubber."

Excellent product design must consider not only material safety but also the application of ergonomic principles. Ergonomic design is mainly reflected in three dimensions: the shape curve should conform to the body's natural form, avoiding unnecessary pressure and friction; size specifications should accommodate the physiological characteristics of most users, providing comfortable user experience; the interface should be intuitive and easy to use, ensuring effortless control during operation. Research shows that ergonomic design can significantly enhance comfort and prevent physical injuries caused by improper design.

Different materials offer distinctly varied user experiences. Medical-grade silicone is highly regarded for its soft texture and good thermal conductivity; borosilicate glass's cool texture and smooth surface appeal to users who prefer strong stimulation; stainless steel products excel in weightiness and durability. The common advantage of these materials lies in their easy cleaning and disinfection, along with long service life. In comparison, porous materials are not only difficult to clean thoroughly but also degrade over time, compromising user experience and posing health risks.