MEASURE FIRST: Our pad size 9.5'' x 4.5'' x 1.5'' fits chair arms from 6 to 10.5 inches. Since the pad is 9.5\" long and 4.5\" wide, if your existing armrest is shorter or longer than these sizes, it will not fit perfectly. If you need a longer size, we have a longer version that is 11\" long, please find it on our detail page or store. Measure first before purchasing. Buy with confidence! ERGONOMIC ARM PAD: Our memory foam pad is super soft yet firm, which can relieve the pressure between your arm and elbow by providing cushioning, making you feel comfortable in your chair. Easy to put on and take off. NO MORE SORE ELBOWS & FOREARMS: These armrest pads solve the problem of hard, plastic armrests. Covered with super soft, high-quality polyester fabric, they dramatically improve your comfort level. The snug-fitting armrest covers do not cause sweating. PREMIUM QUALITY: 100% memory foam and polyester velvet finish. If you don't like velvet material or if your skin is allergic to this velvet, please look for another armrest solution. The memory foam conforms to your elbow and arm to relieve pressure points. Extremely comfortable armrests. COVER WASHABLE: It is equipped with an invisible zipper. You can easily unzip the cover and toss it in the washing machine for easy cleaning.