Polyester is a synthetic fabric that is known for its resistance to shrinking. Unlike natural fibers such as cotton or wool, polyester is less likely to shrink when exposed to heat or moisture. However, it is still possible for polyester to shrink under extreme conditions, such as high heat in the dryer or hot water in the washing machine. To prevent shrinking, it is recommended to follow the care instructions on the garment's label and avoid exposing polyester to high temperatures. **

Polyester itself is not inherently waterproof, but it can be treated with a waterproof coating or laminate to make it water-resistant or waterproof. This treatment creates a barrier that prevents water from penetrating the fabric. However, it's important to note that the level of waterproofing can vary depending on the specific treatment and construction of the polyester fabric. **

Polyester itself is not inherently stretchy, as it is a synthetic fiber known for its durability and wrinkle resistance. However, when blended with other fibers such as spandex or elastane, polyester can become stretchy. This blend is commonly used in activewear, swimwear, and other clothing items that require stretch and flexibility. So, while pure polyester is not stretchy, it can be made stretchy when combined with other materials. **

Polyester has both advantages and disadvantages. It is durable, wrinkle-resistant, and retains its shape well, making it a popular choice for clothing and home textiles. However, it is not as breathable as natural fibers and can be less comfortable to wear in hot weather. Additionally, polyester is a synthetic material made from petrochemicals, which can have negative environmental impacts. Overall, whether polyester is "good" depends on the specific use and individual preferences. **

Cotton is generally considered the best material for underwear due to its breathability, moisture-wicking properties, and softness against the skin. It is also less likely to cause irritation or allergic reactions. On the other hand, polyester is not as breathable as cotton and can trap moisture, leading to discomfort and potential odor. Therefore, cotton is the preferred choice for underwear material. **

Fur is typically made of polyester acrylic, which is a synthetic material designed to mimic the look and feel of real fur. This material is often used in the production of faux fur products as a more ethical and sustainable alternative to real animal fur. Polyester, on the other hand, is a synthetic fabric commonly used in a wide range of clothing and household items, but it is not typically used to create fur-like textures. **

No, the polyester has not discolored. **

As an AI, I do not have personal preferences or feelings. However, polyester is a popular synthetic fabric known for its durability, wrinkle resistance, and affordability. Some people like polyester for its easy care and versatility in clothing and home textiles, while others prefer natural fibers for their breathability and sustainability. Ultimately, whether someone likes polyester or not depends on their individual preferences and needs. **