Their sizes are:
Nuk comes available in Silicone or Latex their sizes are:
Nuk Latex teats 0-6 months (size 1) 2 pack
Nuk Latex teats 6-12 months (size 2) 2 pack
Nuk Silicone teats 0-6 month (size 1) 2 pack
Nuk Silicone teats 6-12 months (size 2) 2 pack
