Features:

100% brand new and high quality
Hydroponics seed growing media sponges is very easy to use.
They are good for starting new plants from seed or hydroponics.
The system produces high quality and high yields vegetables, melons or berries, etc.
Adopts soilless cultivation, which is clean and sanitary meanwhile can save space.
Can be widely used in greenhouse cultivation, vegetable planting base.
Designed for fast, maximum-convenience vegetable gardening.
They can fit for most seeds, such as fruits, beans, vegetables, cereals, flowers and so on.

size for choose:

25#  25x20mm
32#  32x30mm
40#  40x30mm
45#  45x30mm
50#  50x30mm

package :

( this link only Sponge not include nursery pots )
for choose

Note:
Transition: 1cm=10mm=0.39inch
No retail package.
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!