Color: Ivory White</br>Sponge Dia: about 32mm, 1.3"; The height: about 30mm, 1.2".</br>Using Tips: </br>1,The sponge is environmentally friendly . Their color is ivory white</br>but when they touch the air, the color may become the light yellow.</br> This case is normal. It won't influence the using of the sponge. Please don't worry.</br>2,Before using the sponge, please soak it for about 1-2 hours and squeeze</br> out the water. Then making the sponge wet with the clean water.</br>3,Soaking the seeds for several hours to make them drink enough water.</br>Note: </br>1. Please allow 1-3cm differences due to manual measurement. Maybe some </br>pictures look like larger size,please notice the exact items size.</br>2. Item color displayed in photos may be showing slightly different</br>on your computer monitor since monitors are not calibrated same.</br>Hope you can understand.</br>