Multiple adaptors are available (purchase separately) to make it perfect fit to your bottle.
Type 1 - Pigeon Standar neck PP - Vita flow 140ml - Simba Standard neck PP - Huki Standard neck - Chuchu Standard neck PPSU - Dr. Brown Standar neck PP - Kukuduckbill Standard neck - Medela - Vita Flow PP mini 60ml - Nanobebe - Pigeon standard neck glass - Dr. Browns standard neck glass