Introduction:Manner’s newly launched silver stainless steel straw cup was taken off shelves within half a day due to a large number of returns, with the main reason being that the outer coating of the lid peeled off upon contact with water. This article delves into the design highlights and quality controversies of this limited-edition run of 60,000 silver cups, reveals common issues with PP plastic silver-plated layers, and provides practical tips on cleaning and storage to help coffee enthusiasts avoid similar pitfalls.
For a long time, Manner has successfully attracted a large base of loyal customers through its “bring your own cup and get 5 yuan off” promotion and high-aesthetic freebie strategy. However, the silver stainless steel straw cup launched at the end of August, although featuring a cool appearance and a lower entry barrier, received numerous complaints from users within twelve hours of going live due to quality issues. What exactly went wrong with this highly anticipated limited edition cup?
In fact, as early as November last year, Manner had already released a stainless steel straw cup in white, green, and blue, which could only be obtained by purchasing a 75-yuan hot drink set, drawing dissatisfaction from many consumers. The newly launched silver version not only has a more futuristic look, but also relaxes the eligibility criteria—users can now get it for free by purchasing just two iced coffees on a food delivery platform. The inventory has even been increased to 60,000 units, showing the brand’s confidence in market response.
As soon as the campaign went live, many coffee enthusiasts immediately waited on the mini-program and delivery platforms, ready to snap up this limited-edition silver cup. Some even prepared their shopping lists in advance, waiting for the price adjustment to place their orders immediately, hoping to secure one on the first day. However, this enthusiasm was quickly dampened by a wave of negative reviews.

Many users reported that after simply rinsing the new silver stainless steel straw cup with water, the outer layer of the lid showed obvious signs of peeling, with the silver plating appearing scratched, instantly transforming its once shiny appearance into one full of flaws. Even more surprisingly, it was found upon inspection that while the cup body and straw are made of metal, the lid is designed with a PP polypropylene plastic outer layer coated with silver, making it prone to peeling when exposed to water or even slight friction.
According to real-world testing experiences shared by multiple netizens, this kind of coating is easily damaged even during hand washing, especially when using cleaning brushes or sponges with higher friction. Experts point out that while PP plastic itself has good heat resistance and chemical resistance, the outer silver plating is often just a thin decorative layer that does not possess long-term wear resistance.
For consumers who have already purchased this silver stainless steel straw cup, it is recommended to pay special attention to cleaning methods: avoid using rough cleaning tools, and instead use a soft cloth for gentle wiping; try to use warm rather than hot water when washing to prevent the plastic from deforming; store the lid separately from the cup body to avoid prolonged friction. If peeling has already occurred, although it does not affect drinking safety, it does impact the overall aesthetic.
This incident also serves as a reminder to coffee enthusiasts that when selecting high-aesthetic coffee accessories, in addition to focusing on the appearance design, they should also pay close attention to material descriptions and usage precautions. While Manner has quickly become the king of giveaways in the coffee industry, there is still room for improvement in product quality control, especially in the material selection for limited edition items, which should take actual usage environments and consumer expectations into fuller consideration.
The above content is compiled by CoffeeHunters, a coffee news website.