12Pcs Kratky Blackout Sleeves for Ball Mason Jars 32 Oz, Black Wide Mouth Mason Jar Grow Cover, Hydroponic Container Sheath, Sprouting Jars Sleeves for Help Plants Grow Healthily of Kratky
- 🪴 Easy to Control Light: Our hydroponic jar sleeves allow you control light for different sprout seeds. It can keep light out of your container when hydroponic use, and most green leafy sprouts also prefer indirect sunlight.
- 🪴 Enough Quantity: Package includes12pcs blackout sleeves, which are sufficient for you to use in daily hydroponic system or replace.
- 🪴 Product Size: The kratky blackout sleeves fit 32oz wide mouth mason jars quite well, it's not suggest to use on other size of mason jars.