A few days ago, a friend wanted to buy a light-weight outdoor bag with a water bag, so he looked at a lot of product information, mainly CAMELbak and OSPREY, to see that confused and confused, because too many packets, you really do not know how to choose it is good.
Then I changed my mind: Why did you want to be led by the manufacturer's marketing strategy? Why don't you choose the right backpack for your needs?
So I thought about some of the feelings of using the bag over the years, and made some sort of use of the backpack. I found out that the bag can be used according to its capacity. You determine your use, and then select the appropriate capacity. Then refer to the network and the forum. As well as the evaluation and recommendation of authoritative magazines on corresponding capacity backpacks, it is easier to choose a good package that suits them.
The following is my combing, personal experience, not necessarily correct, please also point:
1, 3 hour endurance sports water bag (<10L):
Classic cases include Camelbak Octane XCT/LR, OSPREY VIPER 10, and RAPTOR 10.
2. Lightweight outdoor package (about 20L) on one day:
This kind of bag is an outdoor activity for a day, such as hiking, hiking, boating, ice climbing, etc. In addition to carrying the above-mentioned things, you can also bring jackets, fleece, more food, more equipment. Such as cooking utensils, trekking poles, hail hooks and so on.
Classic cases include Camelbak MULE, RIMRUNNER 20, Osprey Talon 22, Arc teryx Axios 25 and others.
There is a kind of punching bag in this kind of bag. It is a small bag for Deng Xueshan and only brings in the least essential items when the top is punched. It is designed with extremely lightweight design. When not in use, it can be formed into a ball. Slap, big, light, open when used. Become a 20L package. It is also very convenient to carry your daily trips. When you buy souvenirs from the tourist destination, take out this bag and open it as a backpack.
3, daily multi-purpose package (about 30L):
This bag can handle 1-3 days outdoor light use, but also for daily work and leisure. Some have a strong ability to expand. It can handle business travel for about a week.
If the city needs daily work, there is a computer mezzanine design that can hold a portable or tablet computer.
Classic cases include Osprey MANTA 30, Camelbak Alpine Explorer 30, Maxpedition computer packages and more.
4, travel bag (about 40L):
This kind of bag is mainly to deal with 1-2 weeks easier travel, you can load a lot of clothes and items.
5, reload the package (>50L):
This kind of bag is prepared for long time outdoor activities. The material is strong and the system is strong. It can make you carry a lot of equipment, food and water and it is very easy to carry it back. It can cope with a variety of outdoor harsh environments, extremely hardwearing and hard to damage.
This kind of wind turbine is vertical axis, with Maglev PMG generator usually, it's very quiet and smoothly when rotating. It could star moving when the wind is very gentle because of maglev. And it's very quiet so you can install it on rooftop, it won't disturb your home and your neighbours. Besides, due to the vertical axis, the design could be more creative and openness compared with normal horizontal wind generators. However, the efficiency of vertical wind turbines is not very good, around 15% ~ 50% normally, some special design could up to 50%~75%.
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