The identifier most commonly refers to the ES Robbins EverLife High Pile Chair Mat , a heavy-duty office accessory designed for thick carpets. Review: ES Robbins EverLife High Pile Chair Mat (124154)
: Like most heavy vinyl mats, it may require some time to flatten completely if shipped rolled. 124154
: According to Costco , it is rated for users over 200 lbs, making it suitable for "Big and Tall" office setups. Cons: The identifier most commonly refers to the ES
: It is GREENGUARD Gold Certified for low chemical emissions, making it safer for indoor air quality. 124154
: While the 45" x 53" size is generous, the 12" x 25" lip may not fit all desk configurations if you have a narrow leg opening.