12Pcs Hydroponic Blackout Sleeves, Wide Mouth Mason Jars Bags for Planting Opaque

STRONG MATERIAL: Hydroponic blackout sleeves are made of quality 210D Oxford fabric and are equipped with adjustable buckles, which are washable and reusable
PACKAGE INCLUDE: You will receive 12Pcs blackout sleeves, each suitable for a 32 ounce wide mouth Mason jar, which is sufficient for your daily hydroponic system use or replacement
MAIN FUNCTIONS: Blackout sleeves enables you to control the light according to different sprout. When hydroponically growing, can block light from entering your container
EASY TO USE: You just need to put the mason jar into the blackout sleeve and then tighten the adjustable buckle, which is very simple, you can use with confidence
WIDE RANGE OF USES: Kratky hydroponics is the most passive form of hydroponics. Blackout bags can help you grow more plants easily, useful and practical