What is the difference between a single layer, a double -layer and a three -layer Tent.

The Tent is an essential thing for the wild Camping. It can not only prevent wind, rainproof, mosquito prevention, but also keep warm. It is divided into three different structures: single, double and three -layer.Structure Tent.

Single -layer Tent

Single -layer Tent production technology is relatively simple, and its biggest feature is light, economical, and small.

Double Tent

Double -layer is different from a single layer. It adds a layer of breathable internal account to design.In a relatively cool season, the hot air excluded by the human body will condense water droplets on the inner wall of the Tent under the influence of air outside the Tent. If it is a single Tent, the water droplets will flow down the inner wall of the Tent and wet the sleeping bag.After the internal account is added, the external account will not be connected directly with the inner account. At this time, the heat emitted by the human body will pass through the inner account, so that the water droplets condensed on the foreign account will flow into the ground.The problem of water cutting.

Three -layer Tent

The design of the three -layer Tent is to add a layer of cotton account to the inner Tent, which further enhances the warmth effect.Even if the Outdoor environment is about minus 10 degrees, because of the protection of the cotton account, the temperature in the account can remain around zero, so that the temperature in the Tent is not too low.

Therefore, when the ambient temperature is above 5 C, it is more suitable for using a single -layer Tent. When the ambient temperature is lower than 5 C, it is best to use a double or three -layer Tent to prevent water from the inner wall of the Tent and avoid frostbite.

1. Is it necessary to buy Fitness gloves?

It is necessary to buy Fitness gloves. Wearing Fitness gloves have the following benefits:

1. Prevent slip away, make the grip more firm

I believe many people have similar experiences: during fitness, holding equipment will feel a little slippery, especially when sweating.Wearing Fitness gloves can help increase the friction between the palm and the fitness equipment, and can help us hold more stable, especially for the effects of "pull" (such as pulling "(such as pulling the body or durler, etc.).

2. Protect the Skin of the hand and prevent long cocoons

Another important role of wearing Fitness gloves is to avoid direct contact with the equipment to prevent the palm of the palm from grinding up the calluses or blisters to protect our Skin.It is said that your hand is the second face. If you love fitness, you must protect your hands.Long -term fitness exercise may cause the palm Skin to harden. Hand ministers cocoon. Fitness gloves can help reduce equipment to rub the Skin and reduce the chance of cocoon.

3. Protect your wrist and prevent injuries

Some studies have shown that 60%of the strain in fitness occurred in the wrist.There are many actions during fitness that they need to be done through the power of the hand, and the hands are very easy to be injured.At this time, we can protect the Fitness gloves with Wrist care design.

For example, when wearing such as bench press, wearing such Fitness gloves can help us reduce the pressure of our wrists, reduce the risk of injury, and prevent strain or other injuries.

2. How to choose a fitness glove that suits you

Since Fitness gloves are so important. In order to reduce hand friction and strengthen the grip, you must also pay attention to choosing gloves that are suitable for you. You must consider these three selection principles: size, style, and material.

1. Size

Common power training gloves do not wrap their fingers, so the problem of length should not be too worried, but to choose the width of the palm that suits you,Avoid being too tight or loose during exercise, affecting the effect of exercise.

2. Style: Wrist care

There are many styles of Fitness gloves, such as full finger, semi -finger, Wrist care, protective pads, etc., depending on your sports needs, choose a glove that suits you, if you like to play boxing, then boxing gloves are necessaryEssenceIf the intensity of heavy training is high, it is recommended to choose a wrist guard. In this way, you can fully protect the wrist, and it is best to have a protective pad to allow you to have a thick layer of protective pads below the four -finger joint and thumb.It is less likely to feel pain when doing pull or push.

3. Material: non -slip and sweat

There are many materials for Fitness gloves on the market, so the selected materials must be mastered these two points: non -slip and sweating, and leather gloves are more abrasion and vitality, but cleaningventilation.Don't dry the sun, don't bleach or dry the machine. If it is not cleaned properly, it is easy to have sweat odor for a long time.In addition, there is also a material for chlorine rubber. Although it is not ventilated, it is easy to clean, depending on personal preferences.

As for the light and thickness of the gloves, depending on your training intensity, people with strong training level can choose thick gloves; if the weight is low, select the inner thinner.Of course, these gloves must be breathable, elastic elasticity, and avoid feeling uncomfortable when you re -training.

1. What are the advantages of Underwater propeller

Underwater pusher is equivalent to underwater motorboats, which can be used as regular diving or play.Since the invention, the Underwater pusher has been very popular, and even 007 has used them in the movie.

The benefits of underwater pushers are obvious. It can make the diver's minimum physical strength reaching the maximum depth.Many divers say that the use of Underwater pusher allows them to focus more on their breathing. At the same time, it can help you get a little breath from the coast to the potential point.Multi -view.

Second, the shortcomings of underwater pushing device

We have briefly learned about the advantages of Underwater pusher, let's take a look at the shortcomings of Underwater pusher!

1. The use of Underwater pusher has a certain danger. First of all, the speed of diving rising is the risk of hypotension.At the same time, changes in air pressure may also cause ear pressure problems and even eardrum damage.Therefore, there must be a certain angle when using the propeller, and the speed must be controlled.

2. It has a short battery life. Even if it is full of electricity, it can only be used for 1 hour, so before use, you must ask professionals to check it carefully and carefully.In the process of use, you must also pay attention to the power at all times. Do nt play too much. Even if you ignore this problem, there will be some serious accidents.

1. The Law of the summer Beach scarf

The Beach towel can be worn on the body. Although it is just a bath towel, it has a stylish pattern on it, and the size is large enough. It is very good to wear it as a shawl or sunscreen.There are many laws of beach towels, for example::

1. beach towels can be used as a jacket or shawl directly, just put on your body or on your shoulders. This method of wear is more daily.

2. Put the Beach towel from front to or back, and then go forward, then hit a knot, you can act as a skirt, generally a single -layer system. If the Beach towel is large, you can also have a double -layer department.

3. Put the Beach towel behind the back, then pass through the two corners of the longest one side of the Beach towel from the armpit, tie a knot on the chest, and then tie the two ears behind this.It became a sloping skirt, cool and beautiful.

4. Hang the Beach towel around the neck, pinch your two ends with your hands, then go around the back, and then wrap the leftovers to the front tie, and just sort it.

5. First, go behind the Beach towel, pinch your two ends, and hit a live buckle. After tie it, hang it on the neck.

6. Siege the Beach towel to the chest, tie a buckle, grab the two bands that are tied to the good buttons, put it on the chest and continue to be deducted, and you can hit a bow.Deduction, make a long skirt with a Hanging neck.

There are many methods and matching of beach towels, so how can the Beach towel look better?

2. How is the Beach towel look good

The size of the Beach towel is generally large, suitable for wearing clothes on the body, and the beach towels on the market are colorful, rich in patterns, diverse styles, and the decorative effects are quite good. If you want to make the Beach towel look good, it is mainly necessaryPay attention to two aspects:

1. Choose the right pattern and color. The pattern of the Beach towel is many color. The beach towels of different shapes can show different decorative effects.

2. In the process of the system, choose the correct direction and the landscape pattern to be displayed, so as to make the decorative effect of the Beach towel better.

There are more than one method of the Beach towel. The same Beach towel can be matched with different shapes with different ties. If you are too lazy to get it, you can put it directly on your shoulders and the decorative effect is good. Or buy a geometric shape.The Beach towel of the pattern can be tied at will, because the geometric pattern can construct different patterns and shapes, which is more casual.

[Types of sports Protective] What are the common sports protective supplies for sports protectives classification

What are the sports care

1. helmet sports protective gear

Applicable types of sports: speed roller skating, skiing, racing sports, and other extreme sports that are vulnerable to heads, etc.

Common types: wheel sliding helmet, bicycle sports helmet, racing helmet, etc.

Main protection effect: prevent the head from being impacted or encountered by hard objects

2. sports protective gear of human limbs

Applicable types of sports: basketball, football, tennis, Badminton and other ball sports; run, fitness, move, martial arts, etc.

Common types: head protection, shoulders, hands, elbow, wrist protection, waist care, leg protection, knee pads, ankle care, etc.

Main protective effects: prevent and avoid sprains, abrasions, etc. from different parts of human limbs

Introduction to common Sports guards

1. helmet

Most of them are used by sportsmen such as skating, skateboarding, bicycles, and Rock climbing. The helmet can reduce or even eliminate the impact damage of the object on the head to ensure safety.The shock absorption effect of the helmet is divided into two types: soft protection and hard protection.In the impact, by increasing the impact distance to reduce the power of collision, the kinetic energy of the impact is all transferred to the head; the hard protection does not increase the impact distance, but instead of cracking digestion kinetic energy.

2, glasses

Optical protection is a auxiliary equipment used to protect the eyes. The main function is to prevent strong light and wind sand from hurting the eyes.Protective glasses have the characteristics of transparency, good elasticity, and difficulty in rupture.

3. Wrist care

Most of them are used by volleyball, basketball, Badminton and other ball movements.The Wrist care can effectively reduce the excessive flexion and extension of the wrist, especially the ball speed of the tennis. Wearing the Wrist care can reduce the impact of the wrist at the moment of the ball to protect the wrist.

4, waist guard

Most of them are used by weightlifting and throwing athletes. Some project athletes also often use when doing large -load forces.The waist is the intermediate link of the human body. When training for large load forces, it is necessary to pass through the center of the waist. When the waist is not enough or the action is incorrect, it will be injured.The use of waist protection effectively plays a role in supporting and fixed, which can effectively prevent waist sprain.

5. Kneel

Most of them are used by volleyball, basketball, Badminton and other ball movements. Lavigram, fitness, etc. are often used.The use of the knee pads can better fix the joints, reduce the collision and wear of the joints in the exercise, while preventing damage to the epidermis during injury during exercise.

6. Ankle

Generally, there are many short -Running and jumping runners in track and field projects.The use of ankle protection can be used to protect the ankle joint, prevent sprains of ankle joints, and can also prevent excessive excessive stretching of Achilles tendon.For athletes with ankle joint injury, it can also effectively reduce the scope of joint activity, reduce pain, and speed up recovery.