Made from borosilicate glass,you can clearly watch how the wet the soil is,the grow,the plant growth,and water level.If you want to use clear pot for plants in soil and glass planter for plants in semi-hydroponic,this self watering planter can completely meet both uses Easy to keep the plants alive by self watering.Separate clear plant pot and glass reservoir pot,keep soil staying moist by absorbing water from the reservoir pot through the drainage hole of plant pot.You can clearly see the water level and replace as needed Good for water loving plants.Like african violet,fern,orchid,succulents,herb,cactus,monstera,semi-hydro plants,bamboo plant,aloe, fly trap,carnivorous plant,calatheas, plants,mint,rosemary,thyme, plant,small houseplants 4 inch plant pot for small plants.Overall 4.0inch planter diameter and 4.0inch height.Proper size as decoration for shelf,home, desk accessories for women,bathroom,counter,bookshelf,dining Plant can keep alive for a couple of days when you work long hours or leave for vacation gift for plant lovers for occasions like wedding,birthday,housewarming,Mother's day,Thanksgiving day.Please note that plants are not included