Comparing a 85J Comexim Basic Plunge Bra (170) with a 40GG Elomi Matilda Plunge Bra (8900)
The 40GG's band is a lot longer than the 85J bra. The 40GG bra has bigger cups and they are a lot deeper and wider than the 85J bra.
The 85J is 1 band smaller than the 40GG.
The cups are equivalent.
Basic Plunge Bra (170)
Matilda Plunge Bra (8900)