Nurture your seedlings by ensuring they have a warm area for root growth and germination. This Seeding Heat Mat speeds up the transplanting process by keeping the soil between 70?and 85?. Intended for indoor use only, this product is waterproof and easy to clean to make storage a breeze. Available in small medium and large sizes and carries an MET safety certification. The Seedfactor Seeding Heat Mat adopts the latest 7.5MM thickening,105 degrees of high temperature resistant cylindrical SJTW water-proof power cord (thicker than the general power cord, solid, high temperature resistant), safer and more durable, and guarantee the stability of seedling mat safety work.