In the field of adult products, Pair Hart has always been a secret camp for anime lovers, and all products are given anime anthropomorphic images. Before it set foot in the adult product market, the design of the airplane cup channel was very simple, and the selling point was the simulation of straight up and straight down. Pair Hart was the first to create a curved channel structure with a simulated exterior that hides raised, exaggerated shaped textures. Due to the pursuit of more direct texture friction stimulation by Europeans and Americans, this airplane cup has also gained a lot of fans in Western countries, and it is one of the few two major Japanese brands that can enter the European and American markets.
 
The R20 is a famous product launched by Hart in 2009, and as the best brand in its price range, the R20 holds the top three sales records in the Japanese aircraft cup sales rankings, and has now been iterated to the third generation of products. The R20 is not characterized by the restoration of authenticity, the channel texture is convex and exaggerated, there will be a noticeable sense of resistance when used, and the sound of piston movement can be made after squeezing the bottom to exhaust the air.
 
The internal channel style of these three generations is completely different, with the first generation having the longest channel and the strongest suction, so the stimulation is higher. The second generation has the best comfort, and the slow play channel is designed to be short and wide, making it the most addictive to use, and is also known as the "juice artifact". The material of the third generation is harder than the previous two generations, the overall sense of wrapping is strong, the internal is a phased stimulation, the deeper the stimulation, the higher the sense of layering, it is the latest work of the R20 series, which is very suitable as a tool for exercising staying power.
 
In addition, the derivative product "Silent Girl" based on the R20 special-shaped channel has reached the peak of the pair of Hart, with a price of nearly 400 yuan. For consumers with a small budget, you can consider the lC2 Love Story series, which costs only 119 yuan per item, and the overall style is similar to that of R20, which is a cheap version of R20.
 
Judging from the product naming, the pair of Hart is very in line with the taste of "house rot", and the positioning is younger. If R20 represents the youthful vitality of about 20 years old, then G19 represents a little younger immature and shy, and there is a clear difference in product style. Formerly known as the "R17", the G19 is its main feature with gentle slow play, second only to the R20 series in sales, and is also one of the masterpieces of the pair of Hart, which has now been updated to the fifth generation. Several items of G19 are relatively soft, the feel is similar to that of earlobes, and the channel is mainly simulated female channel, which is not as stimulating as the R20 series, and even worse than NPG's famous instrument certification series.
 
The pair of Hart aircraft cups is mainly made of TPE materials of skin tone, which feels more like real human skin and is full of real sense of use. The TPE material aircraft cup cannot be turned out for cleaning, and it needs to be coated with protective powder (talcum powder) when storing, otherwise it is easy to dry out and peel, and it is more difficult to maintain.
 
The price of Zihart's products is more than 200 yuan, and as long as it is properly maintained, it is still quite durable. Its full line of products does not contain lubricating fluid, and it is necessary to pay attention to adding it when using. It is worth mentioning that the materials used in the pair have passed the certification of Article 370 of the Food Sanitation Law of the Ministry of Health, Labor and Welfare, which is the same standard as baby products, and can be used without condoms. However, due to everyone's different understanding of cleanliness, it is still easy to breed bacteria if cleaning is not in place, so it is recommended that friends should still wear condoms, which is more secure.