21W Seedling Heat Mat for Seed Starting, 10″ x 20.75″ Waterproof Heating Pad for Indoor Plants Germination Hydroponic, MET Standard – 2 Pack

Heating pads should never be used on top of each other; they may melt or even catch fire if they get too hot.
PREMIUM MATERIAL – Made of multiple layers of flexible PVC that encase heat-conducting film, the outer layer is sealed to protect the internal heating elements. It is wear-resistant and durable to use. A must for starting seeds in Spring.
UNIFORM & STABLE HEATING – The heat-conducting wires are evenly distributed in the heating pad, so that the plant seeds can be heated evenly. Provides constant tem-per-at-ure to improve vegetable, plant, herb, and flower seed growing.
SAFE & EASY TO USE – The seed grow mat is designed with IP67 waterproof, surface is easy to clean that enables safe scrubbing. Just place the heating pad flat under the seedling starter trays, then insert the plug into the socket, and turn on the power to start heating.
CONVENIENT STORAGE – This 10″ x 20.75″ heating mat is light and compact, you can roll it up and pack it in a bag when you don’t need it. No matter where it is stored, it will not take up much space.
VARIETY OF USES – Perfect for heating plant seeds or seedlings, greenhouse, growbox, home-brewing, and pet enclosures terrariums, such as those used in reptile, rodent and arachnid. Especially if you live in colder states.