Grenebo XL Seed Trays : Reusable 4 Pack Propagators BPA Free Seed Trays with Lids Humidity Adjustable for Greenhouse… Price: $45.47 (as of 01/10/2022 17:57 PST- Details)

【Vent control knob Design】 With a vent control knob design you can handle lifting the lid off easily,and turning to regulate indoor temperature and humidity from 50%-100% to meet your needs.
【Upgraded thick materials】 Grenebo Seed Trays with lids are made of 0.8mm PVC material, which is 30% thicker than other trays, and it’s durable and not easily broken.
【Plant Observation Available Anytime】Each tray has 24 clear planting pots that let you clear to see root development. Underneath is a waterproof and dirt-proof box that can effectively prevent water and soil from flowing out.