Introduce the concepts of STEM to little learners with Sprogs' STEM Classroom Rug. Designed to withstand years of daily use, this rug features bound and serged edges to prevent fraying and stain-resistant, 30-ounce nylon with anti-static treatment. Antimicrobial protection prevents bacteria from growing. Meets Class One fire safety requirements, is Green Label Plus certified by CRI's indoor air quality program and is backed by a Lifetime abrasive wear.