ULTRA THICK MEMORY FOAM: experience more comfort while you work; thickest memory foam interior of the wrist rest features an ergonomic, slow rebound for more comfort than ever; inner foam measures nearly 1.2 inches thick; you'll never want to work without this rest ever again.ERGONOMIC DESIGN: forget sore wrists and fingers when typing and using a mouse; these rests are designed to help alleviate sore muscles, stress, and aches and pains by elevating your wrists to help aid in your muscles moving ly without being weighted down.SLIP-RESISTANT BACKING: the ultra durable bottom layer of the rests are designed to stay in place on most desk surfaces, so you can worry less about adjustments and focus on your work.SUPERIOR CONSTRUCTION: featuring a 3 layer design, the rests are designed for long lasting use; durable rubber bottom stays in place on most surfaces; thick inner memory foam material for extra support; soft top spandex layer for additional comfort; wrist rest measures 17 by 3.5 inches, making it a perfect fit for most desks; mouse pad rest measures 6 by 3.3 inches.STAIN AND WATER RESISTANT: top spandex layer is water resistant and stain resistant to help it last throughout the years; to clean, simply wipe with a damp cloth and let air dry