1. Protect Lumbar Vertebra, protect lumbar scientifically, sit for a long time not tired. 2.Adjust your sitting posture and protect your back. 3. The simulated curve fits the lumbar curve 4. Slow rebound memory cotton, soft and comfortable without deformation
For hot drinks:Start with a clean thermos. Warm your thermos by filling it with boiling water. Put the lid on. Let it sit for a few minutes then pour out the water.Once your thermos is warm, quickly add boiling hot drinks and put the lid on tightly.For cold drinks: Start with a clean thermos. Chill your thermos in the fridge or freezer. You can also fill the thermos with ice and water. Put the lid on. Let it sit for a few minutes to cool then pour out the water. Once the thermos is chilled, quickly add cold drink (at or below 4°C or 40°F) and put the lid on tightly.
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