1. Using Tritan (TX2001) raw material, it offers glass-like transparency and excellent heat resistance. 2. Smart module system and 6 mm hidden cap construction provides stability when stacking. 3. The clip-type four-sided fastening structure improves durability and provides a perfect seal. 4. To match the premium product, Platinium (platinum) silicone is used for the silicone packing to enhance its quality.