[Compatible ]These hydroponic sponges are very suitable for the most hydroponics growing systems. Planting sponge can also be used to seed trays and potted plants. It is a good use for indoor and outdoor planting! In addition, the size of the unsoaked sponge may have a slight difference, please do not worry, the size of soaked sponges is 2.55x0.95inch, will not affect the normal use. [High Quality Material]The grow sponges are made of peat, well shaped, balanced PH, strong water wicking ability, which is very suitable to help germination. These growing sponges are eco-friendly and biodegradable. [High Germination Rate]These root growth sponges contain Micrometreutrient elements, which help the seeds and grow . Plant can freely through the sponge, so that each seed can absorb sufficient water and nutrients. [Easy to Use]Seed pods are treated with drying technology, easy to store. Just soak the sponge in water for 3-5 minutes before use, then place the seeds in the middle of the grow sponge with tweezers. The plastic tags is used for easy observation of plant growth. [Grow Anything You Like] Using the replacement sponges, regardless of geographical and seasonal restrictions, you can grow various types of plants in the hydroponic garden system, such as strawberries, , , herbs, flowers, etc. Colour:Photo Color Material:sponge Size: 5.5 x 2cm Package Contents: 100 x Grow Sponges 10 x tag 1 x tweezers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.