Customizable Comfort Adjusts from 3.25" to 6.25" in height to help you find the ideal ergonomic angle beneath your desk Massage-Textured Surface Stimulates feet and prevents slipping for added comfort and steadiness while seated Supports Healthy Posture Encourages better spinal alignment, reduces swelling, and relieves pressure on legs and lower back Ideal for Work or Study Great for home offices, workstations, dorm rooms, and even while unwinding at home Durable & Portable Design Measures 17" x 13", weighs just 5.5 lbs, and tucks neatly under most desks and tables