To label polyester with a textile marker, first, make sure the fabric is clean and dry. Then, place a piece of cardboard or paper inside the garment to prevent the marker from bleeding through. Next, use a textile marker to write or draw directly onto the polyester fabric. Allow the marker to dry completely before wearing or washing the garment to ensure the label stays in place. **

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 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 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 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. **

To seal a window, you can use weatherstripping or caulk. Weatherstripping is a flexible material that can be applied around the edges of the window to create a tight seal. Caulk can be used to fill in any gaps or cracks around the window frame. Make sure to clean the area thoroughly before applying either weatherstripping or caulk to ensure a proper seal. **

To determine if the window seal is properly installed, you should check for any gaps or cracks between the window frame and the wall. The seal should be snug and secure, with no visible signs of damage or deterioration. Additionally, you can inspect for any drafts or air leaks around the window, which could indicate a faulty seal. If the window seal is intact and effectively preventing air and moisture from entering the space, then it is likely properly installed. **

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. **