This product has 9mm snaps and would fit most bodysuits with 9 - 9.5 mm snap buttons. . Most popular baby brands use 9mm snaps but some also use 8mm.
Baby Onesie Extenders : Target
HOMEMAXS Bodysuit Extender Universal Soft Jumpsuit Extend, 41% OFF
Jumpsuits for Tall
Stretch the Life of your baby's bodysuit with a snap of a button. Extends the length of the bodysuit. which is great for growing babies and perfect
Baby Romper Bodysuit Extender 3 Different Snap Size Set Extension Cloth Infant
Set Of 3 Baby Bodysuit Onesie Extenders
Snap Extender
Tall Jumpsuit - Sweden
Baby Onesie Extenderpack of 3,bodysuit Extenders, Baby Jumpsuit Extenders, Baby Bodysuit Extenders ,snap Extender, White Onesies Extender
Snappy Sprout
BODYSUIT EXTENDERS Add Length to Baby's Onesies. Also Great for Cloth Diapered and Tall Babies Fits Carters and All Major Brands
Tall Jumpsuit - Sweden
Grab Bag BABY BODYSUIT EXTENDERS Set of 3. Adds Length to Baby's Onesies
Grab Bag BABY BODYSUIT EXTENDERS Set of 3. Adds Length to Baby's Onesies