When searching for a very durable backpack, consider the material it is made from. Look for backpacks constructed from high-quality, water-resistant materials such as nylon or polyester. Additionally, check for reinforced stitching and strong zippers to ensure longevity. Brands known for their durability, like The North Face or Osprey, are good options to consider. **

I recommend looking for a backpack made with high-quality materials such as ballistic nylon or Cordura fabric, as these are known for their durability and resistance to tears and abrasions. Additionally, look for backpacks with reinforced stitching and heavy-duty zippers to ensure longevity. It's also a good idea to read customer reviews to see how well the backpack holds up over time. Finally, consider purchasing a backpack from a reputable brand known for producing durable and long-lasting products. **

The best hiking backpack for you will depend on your specific needs and preferences. Consider factors such as the length of your hikes, the amount of gear you need to carry, and your body size and shape. Look for a backpack with adjustable straps, plenty of pockets and compartments, and durable, water-resistant material. It's also important to try on different backpacks to ensure a comfortable fit and to see how they distribute weight on your body. Ultimately, the best hiking backpack is one that meets your individual needs and feels comfortable to wear for long periods of time. **

I recommend the Osprey Atmos AG 65 hiking backpack. It offers a comfortable fit with its Anti-Gravity suspension system and adjustable harness. The backpack also has plenty of storage space, including a large main compartment and multiple pockets for organization. Additionally, the Osprey Atmos AG 65 is known for its durability and ventilation, making it a great choice for long hikes and backpacking trips. **

A professional camera typically needs at least 20-30 megapixels to capture high-quality, detailed images suitable for professional use. However, the specific number of megapixels required can vary depending on the specific needs of the photographer and the intended use of the images. For large format printing or commercial work, a higher megapixel count may be necessary, while for web or social media use, a lower megapixel count may suffice. Ultimately, the best camera for a professional will depend on their specific requirements and budget. **

The size of a hiking backpack depends on the length and type of the hike. For day hikes, a smaller backpack with a capacity of 20-30 liters is usually sufficient to carry essentials like water, snacks, a first aid kit, and extra layers. For overnight or multi-day hikes, a larger backpack with a capacity of 40-70 liters is more appropriate to accommodate additional gear such as a tent, sleeping bag, cooking supplies, and extra clothing. It's important to consider the duration and intensity of the hike when choosing the size of a hiking backpack. **

The Canon Powershot SX240 is not considered a professional camera, as it is a compact point-and-shoot camera with a fixed lens. It does not have the advanced features and interchangeable lenses typically found in professional cameras. Therefore, it should not be prohibited at the concert at Jahrhunderthalle Frankfurt where professional cameras are not allowed. **

The best camera backpack for the Sony Alpha 7R II would be one that is specifically designed to accommodate its compact size and provide adequate protection. Look for a backpack with customizable compartments to fit the camera body, lenses, and accessories. Additionally, consider a backpack with padded shoulder straps and back support for comfortable carrying, as well as weather-resistant materials to protect the gear from the elements. Some popular options include the Lowepro ProTactic 450 AW II and the Peak Design Everyday Backpack. **