All the dimensions and detailed information are on our product pages.
The size information is situated towards the bottom of the page.
Generally speaking our sizes are as follows (diameter x depth), but please check the product page for specifics:
Sponge for 8: 17cm x 8cm
Sponge for 16: 24cm x 8cm
Baby Sponge: 5cmx5.5cm
Due to differences in density and ingredients, these measurements may differ very slightly.