BlissTrends Foot Rest for Under Desk at Work-Versatile Foot Stool with Washable Cover-Comfortable Footrest with 2 Adjustable Heights for Car,Home and Office to Relieve Back,Lumbar,Knee Pain-Black. [Comfortable Experience] The BlissTrends foot rest has two layers: the lower layer measures 16.2"*9.9"*2.0", and the upper layer is 3.7" thick. The foot stool is ergonomically designed. [Adjustable Height] Our foot rest is a two-piece set with touch fasteners between the upper and lower layers so you can adjust the height of the foot rest according to your usage needs. When you want to adjust the thickness of the foot rest, you only need to pull the zipper and touch fasteners between the two layers of the foot rest to switch the thickness [Easy to Clean] The cover of the foot rest is installed with a zipper and it can be easily removed for machine washing. The foot rest’s fabric is easy to clean. [High Quality Material] The core of the foot pillow is made of high quality foam, which is supportive and does not easily collapse or lose shape. The bottom of the foot pillow is made with a non-slip design, which ensures that the foot pillow does not easily shift when being used [Multiple Use Options] The foot rest can be used under your feet or behind your knees. Whether in the office or on the go the foot rest can make sitting more comfortable. Also great as an airplane footrest.