Keep an eye on your growth: High quality clear plastic trays of this seed grow kit make it easy to observe your plants without interrupting the process. Total control: Adjustable vents of this seed trays allow you to regulate the temperature and humidity of your seedling environment, so you have total control over the growing process. Grow health and efficient: With drain hole at bottom of each cell for proper drainage, reduce roots oversaturating HUMIDITY CONTROL LID WITH AIR VENTS: Our nursery box is designed with adjustable circular vents, which is easy to maintain the humidity and warmth required for seedlings to germinate The green-lined tray has a raised area at the bottom to keep the growing cell tray well drained and allow the bottom to be watered. KEEP SEEDS GROW HEALTHY: Seeds need a suitable space to increase their absorption of water and nutrients. There are drainage holes at the bottom of each cell for proper drainage to reduce root supersaturation and help improve the survival rate of seeds. Colour:green+white+black Material:plastic Size:19x14.5x11.5cm Package Contents: 3 x 6-hole green seedling box 3 x 6-hole black seedling box 3 x 6-hole white seedling box 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.