Walking outdoors, a knife and scissors can often help a lot. Many backpackers prefer the compact and lightweight Swiss army knife, especially the classic model of Vexcor, which is only 21g. Knives, scissors, screwdrivers, tweezers, toothpicks and nail file all have their proper functions. As for easy-to-pull knives, bottle openers and cork drills, they are not needed at all in the wild, let alone other fancy ones. The aim of lightweight is that simplicity is king. Don't bring a multifunctional pliers with dozens of functions just to be cool. It's too big and heavy to use.
2. Compass (compass)
Learning to use a compass and read contour maps will add a useful skill to your outdoor adventure. Today, GPS has penetrated into every aspect of life, an analog compass may only make you feel at ease, but it is related to safety, and it is better than nothing. Don't buy small toys (too inaccurate) or military ones (too big and too heavy). A transparent plastic compass with scale 10 yuan, 40-50g.
Tip: When purchasing, make sure that the so-called "vacuum oil" or "damping oil" is mentioned in the manual. The oil is not easy to freeze at low temperature, so as to ensure that the compass can be used normally in cold winter and plateau areas. When oil is exposed to the sun for a long time, it will evaporate and produce bubbles, which will affect the performance of the instrument. Put it in your backpack or side pocket when not in use.
3. Safety/emergency whistle
When it comes to life-saving whistle, perhaps the first thing that comes to mind is the so-called "military" multifunctional life-saving whistle. Yes, lightweight hiking emphasizes versatility, but it doesn't mean that saving a few gadgets together is good equipment. Neither the compass nor the thermometer is accurate enough for this life-saving whistle. Other functions are the same as chicken ribs, and they are large and light.
In fact, many buttons on the chest strap of outdoor backpacks will bring their own whistles, or you can buy some on Taobao for two or three yuan. Don't leave your outdoor backpack. There is another piece of equipment that needs to be checked on the travel list, so don't worry.
5. Food bag
From the point of view of packing a backpack, it is easy to understand that all the food is put in one bag. After lightweight equipment, the weight of food often accounts for a large part of the total load. Placing the food bag flat on the top of the main warehouse of the backpack can help compress the lighter equipment such as the sleeping bag at the bottom, keep the overall balance of the backpack, and also prevent some foods, such as instant noodles, from being pressed into the backpack.