Great shape, poor quality
I bought the variable flow Y hole teats, and the Y hole ripped in one within 2 months of use, and about 2 months after that the base sealing ring of the other teat ripped off. Both teats received careful/normal treatment. My son loved them, and they were great for his transition from breast to bottle due to tongue-tie issues, but at the price you pay for these, I would expect them to last longer.