20 oz stainless steel tumbler

As the epidemic has become a norm, people will coexist with the virus for a long time, and it has become a popular behavior to bring their own tumblers for drinking. How to choose a good quality tumbler? This requires us to have a basic understanding of the tumblers and some unique suggestions.

Classification Of Tumblers

We need to understand the types of thermos cups on the market.

Stainless Steel Tumbler

Tumblers made of stainless steel are relatively common in daily life. Stainless steel is not easy to corrode, and is wear-resistant and durable. And the stainless steel tumbler is mainly designed from the combination of inner and outer double-layer stainless steel materials. Its vacuum technology can effectively control the three heat transfer channels of heat conduction, heat convection and heat radiation, so the effect of heat preservation, cold preservation and freshness preservation is also more significant, especially It is heat retention.

30 oz stainless steel tumbler

Ceramic Tumbler

Compared with the closeness and popularity of stainless steel tumblers, ceramic tumblers are not widely used, and high-quality ceramic tumblers are relatively expensive in price. At the same time, in terms of fashion, although stainless steel tumblers are changeable enough due to technological innovation, compared with the gorgeousness of ceramic tumblers, ceramic tumblers are more dominant as a fashion item.

Glass Tumbler

The glass tumbler is also relatively common in daily life. It is small and convenient, and its appearance design is relatively exquisite, which is more in line with the image of daily necessities. It's just that many people have some prejudices against glass tumbler, thinking that the thermal insulation effect is not very good. In fact, this evaluation is a bit too absolute.

20 oz tumbler

When choosing a tumbler, you need to pay attention to the following four points.There are four main factors that determine the quality of a tumbler: heat preservation effect, cup lid design, detachable and washable and safety.

Insulation Effect

The principle of heat preservation is not complicated. The inner liner and the body of the tumbler are vacuumed to form a vacuum layer. The vacuum does not conduct heat, so the heat will always be maintained at the original temperature, and the heat will be dissipated very slowly.

Among them, there are many gaps at the junction of the cup mouth and the cup lid, which leads to the most serious temperature leakage of the tumbler. In fact, the bottle body technology of the major brands of tumbler is similar, and the difference in thermal insulation performance lies in the mouth of the cup. In terms of thread seam treatment and lid design, the higher the airtightness here, the better the heat preservation effect.

The leakage temperature of the cup lid

The lids of traditional tumblers are all threaded, so there will be thread gaps. No matter how tight you tighten, the temperature will still escape from the thread seams.

At present, there is a non-threaded cup lid, which can solve the heat dissipation problem of the threaded seam. It abandons the design of the threaded bottle mouth in the middle, and uses a double-layer silicone seal to withstand the bottle mouth and seal the liquid in the insulation layer, so as to realize the vacuum of the cup lid mouth. The sealing effect and heat preservation effect are better than the threaded cup lid.


Because we drink water every day, we must ensure that the tumbler is clean enough to avoid residual stains causing water pollution and affecting health. Currently, the mainstream threaded cup lids on the market are designed with complex threads, and there are many corners with small gaps. Dirt and residues are easy to appear in these places, and it is basically difficult to remove and clean the inside of the cup lid. , If the disassembly is not good, the airtightness of the thermos cup will be destroyed, so it is very important to choose a thermos cup that can be removed and washed.

Material Safety

At present, the inner tank of the big brand tumbler is mostly made of 304 stainless steel and 316 stainless steel, which are the two mainstream materials at present.
304 stainless steel: All kinds of mechanical properties are relatively excellent, with corrosion resistance and high temperature resistance. It is widely used in the food industry. The iron tableware at home is basically 304 stainless steel, which is the most widely used stainless heat-resistant steel.
316 stainless steel: Its performance is better than that of 304 stainless steel. Its acid and alkali resistance and high temperature resistance are stronger than 304, and it is widely used in medical equipment.
Generally speaking, the thermos cup with 304 stainless steel liner is enough to protect the health of our drinking water.

30 oz tumbler

4 Tips To Choose A Premium Custom Tumbler

Observe insulation and sealing performance

Insulation and sealing are the most basic performances of a tumbler. You can pour hot water into the tumbler, place it for a few minutes after tightening the lid, and then touch the wall of the cup with your hands. If it is hot, it means that the insulation performance of the tumbler is not very good. You can turn the cup full of water upside down or shake it vigorously. If there is water leakage, it means that the seal of this tumbler is not very good.


A quality tumbler has no peculiar smell. If it is a low-quality tumbler, it smells like a pungent smell.

32 oz tumbler

See materials and labels

201 stainless steel, it is recommended not to buy, this kind of stainless steel is industrial grade stainless steel, with poor corrosion resistance, even in water, rust spots will appear.

304 stainless steel, this kind of stainless steel is recognized as food-grade stainless steel, with good processing performance and corrosion performance. Generally, there will be marks such as SUS304, S304XX, 304, 18/8, 18-8 on the bottle mouth or liner.

316 stainless steel, this kind of stainless steel is medical grade stainless steel, its corrosion resistance is better than 304 stainless steel, but the price is a bit higher, generally there will be US316, S316XX and other marks on the bottle mouth or liner.

Identify the plastic fittings on the vacuum flask

If food-grade plastic accessories are used on the tumbler, there will be no peculiar smell, a bright appearance, and no burrs to the touch. This kind of accessories will not be easy to age and is harmless to the human body.

20 oz stainless steel tumbler

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