1. Patented butterfly suction sheet, no need of alignment, quick assembly. 2. The soft automatic straw can suck 360 degrees. 3. Strictly selected food-grade soft silicone automatic straws, free of endocrine disrupting chemicals (environmental hormones, bisphenol A). 4. It can be disassembled, disassembled and washed, and easy to replace. Regular replacement is not afraid of dirt accumulation and residual bacteria. 5. Suitable for Standard Neck bottles.