A portable air conditioner can typically cool down a room by about 10-20 degrees Fahrenheit, depending on the size and efficiency of the unit and the size of the room. It's important to properly size the portable air conditioner for the room you want to cool in order to achieve the best results. Additionally, factors such as insulation, outside temperature, and humidity levels can also affect the cooling capacity of a portable air conditioner. **

To make a down jacket more durable, you can treat the outer fabric with a durable water repellent (DWR) coating to make it more resistant to moisture and stains. Reinforcing high-wear areas such as the elbows, shoulders, and cuffs with extra fabric or patches can also increase the jacket's durability. Additionally, using a higher quality down fill and ensuring proper care and maintenance, such as regular cleaning and storage, can help prolong the lifespan of the jacket. **

Yes, there are new down jackets with waterproof quilted seams that are breathable. Many outdoor and activewear brands have been incorporating advanced technology to create down jackets that are both waterproof and breathable. These jackets often use specialized fabrics and construction techniques to ensure that the quilted seams are waterproof while still allowing for breathability, making them ideal for outdoor activities in various weather conditions. It's always a good idea to check with specific brands or retailers to find the latest options available. **

A good option for downhill mountain biking that is affordable, compact, lightweight, and portable is a folding mountain bike. These bikes are designed to be easily folded and carried, making them convenient for transportation and storage. They are also typically more affordable than traditional mountain bikes and are lightweight, making them easier to handle on downhill trails. Overall, a folding mountain bike is a great choice for those looking for a practical and versatile option for downhill biking. **

It is generally allowed to slide down water slides with a waterproof music box, as long as the water park or facility does not have specific rules against bringing personal music devices on the slides. However, it is important to consider the safety of yourself and others while using the water slide with a music box. Make sure the music box is securely attached to your person and does not pose a hazard to others on the slide. Always follow the rules and guidelines of the water park or facility to ensure a safe and enjoyable experience for everyone. **

The correct phrase is "lie down." "Lay down" is incorrect because "lay" is a transitive verb that requires an object, while "lie" is an intransitive verb that does not require an object. So, when you want to recline or rest horizontally, you should say "lie down." **

It seems like there might be a typo in your question. If you meant to ask "Should I count up or count down?" then it depends on the context. Counting up involves starting from a lower number and increasing, while counting down involves starting from a higher number and decreasing. You should choose the method that best suits the situation you are in. If you meant to ask "Should I count down or count on?" then it also depends on the context. Counting down involves decreasing numbers, while counting on involves adding numbers. Again, you should choose the method that best suits the situation you are in. **

The adidas Ultraboost 30 is designed to be both waterproof and durable. The upper material is made of Primeblue, which is a high-performance recycled material that provides water resistance. Additionally, the shoe features a durable rubber outsole that provides traction and protection from wear and tear. Overall, the Ultraboost 30 is built to withstand various weather conditions and provide long-lasting performance. **