1. Is the Bicycle helmet in one -time?

Bicycle helmets can be used multiple times under normal use and proper maintenance, and provide long -term head protection for cyclists.

Although the Bicycle helmet is not disposable, after being severely impacted or damaged, it should be stopped and replaced with a new helmet.After the helmet is impacted, its internal structure and material may have been invisible, and it will no longer provide sufficient protection.

2. How long is the shelf life of Bicycle helmets generally

For the use time of the Bicycle helmet, many riders think that the life of the helmet depends on when it is broken or broken, and then discard it.So will there be hidden safety hazards after a certain period of use of the Bicycle helmet?How many years can the helmet do not collide?

Generally speaking, the Bicycle helmet is valid, because the helmet is exposed to sunlight, calories and other elements for a long time.In addition, the helmet will inevitably fall when used, which will damage the internal structure of the helmet.

The general recommendation of some brand helmet manufacturers is to replace the Bicycle helmet once in three to five years, mainly because the Bicycle helmet needs to face various complex conditions for outdoor products, such as high temperature, ultraviolet rays, deep cold, drought climate, and humid climate.Seasons, temperature, sweat, etc. The materials that constitute our helmets will be degraded over time, which cannot meet its test standards. Therefore, it is difficult to protect the safety of the head after three to five years.

The materials used in the Bicycle helmet are all shattered materials when they are hit. When the head hit hard objects, the helmet will absorb a certain impact and cause rupture to achieve the role of protecting the head.After any collision, replace the old helmet in time to ensure its best performance.

It is worth noting that whether or not you fall or collide, it is recommended to change the Bicycle helmet once as possible in three to five years.Although the helmet has not collided, the sun exposure and sweat erosion can make the helmet and accessories aging, thereby weakening the protection performance of the helmet. No matter how expensive the helmet is, it is not as expensive than the head of the head.

1. TriviaCycling glassesAdvantages and disadvantages

There are many types of Riding glasses, and the more common one is color -changing glasses.

1. Advantages of color change Cycling glasses

Discounted glasses can change with the changes in ultraviolet and temperature in the environment, thereby protecting our eyes.When riding outside, the eyes are exposed to ultraviolet rays for a long time, which may cause eye diseases. In severe cases, it may also cause eye diseases such as cataracts. Wearing colorful glasses can prevent ultraviolet rays from entering human eyes and prevent glare.eyes are fully protected, providing comfortable visual enjoyment for the eyes.

2. Disadvantages of color -changing Cycling glasses

The price of color -changing Cycling glasses is relatively high, which is mainly caused by people's understanding of color -changing glasses. Due to the large market demand, some pseudo -inferior color change glasses produced by illegal merchants flow into the market.If you protect the eyes, pay attention to purchase through regular channels.

In general, color -changing glasses are more suitable for cycling, but it should be noted that the discoloration effect of discolored glasses will be affected by factors such as ultraviolet strength and high temperature, and it takes time to change color.

2. Is it useful under the strong light of the color changing Cycling glasses?

The color -changing Cycling glasses add silver on the lens, making the original transparent colorless lens under the strong light, and it will become a non -colored lens, which has obvious effects in protecting the health of the eyes.Depending on the principle of the contrast between the light color, it is shot under strong light. The lens is variable color to completely absorb ultraviolet rays.Visible light is neutral.After returning to the dark, the lens will degenerate into the original colorless transparency.

Discounted glasses need sunlight to change color, so even under strong light can play a role, but in the indoor regions, because there is no strong light, it will become the original color.Trimming glasses are especially suitable for Outdoor, indoor strong light and other places, which can prevent the damage caused by sunlight and ultraviolet rays to the eyes.

However, it is important to note that the use of color -changing Cycling glasses is to buy high -quality color -changing Riding glasses. Generally, strong light is required to completely change color within 40 seconds. After leaving the sunThe purchased color -changing Cycling glasses should regularly perform discoloration inspections in the sun. Pay special attention to whether the light sensation of the lens is consistent, so as not to occur in a dark and light condition.

1. What are the benefits of bicycle codes?

The bicycle codes are electronic products used to calculate mileage and speed.There are two main functions of the code watch, monitoring and records.The former helps to understand itself during cycling, and the latter helps to analyze itself after exercise.bicycle gauge is generally used for the measurement of bicycle driving speed. The induction magnets installed on the steel bars installed on the front of the front car, the sensor on the front, along the connection line, the code watch seat on the grip and the code on the seatTable composition.The benefits of bicycle codes are: show several cycling data, such as current speed, cycling mileage, cycling time, etc., high -end code tables also have altitude, air pressure, slope display, and so on.

Second, the practical purpose of Bicycle code watch

1. record the total mileage of cycling

The most practical function of a bicycle gauge is the mileage of driving. This is how many kilometers have been ride on the day of your bicycle from the day of the bicycle.For example, you can know how long it has not been oil on the chain, how long hasn't it been maintained for Hua Gu and so on.We can also use the total mileage to set the mileage of bicycle maintenance. The normal bicycle has to be maintained once for 3,000 kilometers. We see that the total driving mileage is 3,000 kilometers to maintain it once.No need to remember time.

2. Display riding data

bicycle mileage is also very useful. It can clearly record the number of kilometers of your cycling, so that the bicycle riders can master the strength of the cycling.After you got back today, you found that you are tired, prove that you are riding too far.You see how many kilometers of the cycling cycling, appropriately reduced a few kilometers of cycling the next day.How far the ride is in your heart every day, and the cycle is getting tired.After exercise, it should be a relaxation of the whole body, a happy mood, and the excessive exercise will cause harm to itself.

3. The code watch shows the riding speed

The current speed display is also very important. It shows how many kilometers per hour you ride now. This can facilitate you to understand your riding speed. You can know your limit speed and maintenance speed.You can understand how long the distance you are going to ride today, and arrange other things.

4. Display time of bicycle code gauge

Time display is also very convenient, although there are many timing tools, such as mobile phones, watches, etc.However, it has its limitations. Now the large -screen mobile phones are put in the pocket of clothes when riding. When you take it out, you should not just support it. It is not convenient or safe.The watch worn on the wrist is okay in summer, and it is not convenient to ride in the long -sleeved season. A small code watch looks down and looks at the current time, saving trouble.

1. Is the wind mirror of the helmet?

When buying a cycling helmet, the helmet with a wind mirror is a good choice.Wind resistance and windproofness are important indicators to evaluate the safety performance of the helmet, and the helmet with wind resistance design can better resist the airflow when the bicycle is driving and reduce wind resistance and wind noise.This can increase your cycling experience while providing better security protection.

The cycling helmet in the wind mirror not only has better windproof performance, but also has more convenience and practicality.For example, some wind -resistant helmets are often equipped with detachable wind resistance baffle or wind resistance mirror, which can better protect the vision during cycling.However, when buying a Bicycle helmet with a wind mirror, you need to pay attention to the following points:

1. Wind resistance performance:When buying, you need to pay attention to the helmet's good wind resistance performance, which can effectively resist the airflow of bicycles when driving.You can view the certification logo and test report of the helmet to understand the evaluation results of its wind resistance.

2. Adaptability:Bicycle helmet with a wind mirror needs to be paired with your Bicycle helmet to ensure that the helmet can closely fit the head to prevent wind and sand from invading.When buying, you can try to wear a helmet to check its fit and comfort.

3. clean and maintenance of the lens:The helmet with good wind resistance is generally equipped with a detachable windshield or a wind barrier mirror. It is necessary to pay attention to its cleaning and maintenance.If the surface of the baffle or goggles is dirty or scratched, it will affect the windproof performance, so it needs to be cleaned or replaced in time.

In short, when buying a cycling helmet, you can choose a helmet with wind resistance design to better protect yourself.It is necessary to pay attention to its certification signs, adaptability, lens cleaning and maintenance to ensure that it can effectively provide security protection.

2. Is the wind mirror riding helmet suitable for wearing glasses?

Wind mirror cycling helmet can be suitable for people wearing glasses, but you need to choose the appropriate model and size. It is recommended to choose built -in glasses racks and open -designed wind mirror cyclists.

As we all know, riding helmets is usually relatively close, and people with glasses are easy to feel uncomfortable.The design of the wind mirror cycling helmet is usually relatively loose, and the person wearing glasses will be more comfortable to bring the helmet.Therefore, for people wearing glasses, wind mirror riding helmets are a good choice.Of course, it is also important to choose the appropriate wind mirror riding helmet model and size.How to choose a wind mirror riding helmet suitable for wearing glasses?

First of all, you need to pay attention to the wind mirror riding helmet of the built -in glasses rack.This kind of helmet usually sets a glasses rack internally to fix the glasses to avoid shaking during cycling.Secondly, you need to choose an open -designed wind lens helmet.The lower jaw part of the open helmet is relatively loose, which can adapt to different facial shape and glasses size, and it is more suitable for people with glasses.In addition, you need to choose the appropriate wind lens helmet size according to the size of the head circumference to ensure that the helmet pastes the head, so that it will not blur the sight or cause excessive eye pressure.

In short, if you are a rider wearing glasses, choose the appropriate wind lens helmet to ensure safety and comfort.Finally, don't forget to choose a standard helmet and wear it in a prescribed manner to ensure cycling safety!

1. Can I wear a Cycling glasses for Contact lenses?

When riding exercises, we usually wear Cycling glasses, mainly to protect the Solar ultraviolet rays and windproof sand and sand, but many friends are not convenient to wear Cycling glasses because of myopia and Outdoor cycling. ThereforeRiding glasses, so do you do this?Under normal circumstances, it is not recommended to wear Contact lenses and Cycling glasses at the same time, especially riding exercises for a long time.The main reasons are the following two points:

1. When riding a bicycle, the speed of the surrounding air will accelerate significantly, which will cause the water contained in the Contact lenses to decrease sharply. The lenses gradually dry and harden.Epitrobial tissue cause eye pain, itching, redness, and even inflammation.

2. Even if you wear Contact lenses when riding a bike, there will inevitably be small dust particles into the eyes. When mixed between Contact lenses and eyeballs, it will cause pain due to friction.Cause eye disease.

Therefore, although wearing Contact lenses and Cycling glasses at the same time, it is not recommended to do this, especially long -distance riding does not recommend using this method.

2. precautions for Outdoor cycling wearing Contact lenses

Many friends will wear Contact lenses during Outdoor cycling, but it should be noted that Contact lenses still need to pay attention to cleaning:

1. If the dust enters the eyes when riding, it needs to be treated in time. Remove the contact lens and clean it. You need to ensure that your fingers are cleaned when cleaning, and then rinse the eye with water.Fingers can also.

2. If you wear Contact lenses outdoors, it is necessary to bring a glasses box, because there will inevitably have eye discomfort during the cycling process, and Contact lenses are not suitable for long -term wear.Take a rest or remove it at night.

3. Outdoor cycling sometimes hosted, but if the Contact lenses are frozen or dry, it cannot be continued. Therefore, it is recommended to bring a pair of frame glasses to prepare from time to time. When the Contact lenses are lost, they can also be used emergency.