ECR4Kids Mobile Rest Mat Storage Trolley with Casters, Blue Stay Organized  Store away up to forty 1" inch thick or twenty 2" inch thick rest mats; not included Suits any Space  Options for use in a classroom, daycare, preschool or gym class Lock and Roll  Designed with a durable steel frame with 6 casters; 4 locking Non-Toxic and Safe  product is phthalate-free and GREENGUARD[GOLD] Certified for minimal emissions into indoor air Measures 49" H x 51.2" W x 27" D, 26.7 lbs Adult Assembly Required