ACTA-BACK Moldable Inserts - 19-21" W/C The ACTA-BACK Moldable Inserts are designed to provide custom support and comfort for wheelchair users. These inserts feature a unique moldable design that allows you to adjust the contour to fit your individual needs. The inserts are 2.5" thick and offer a weight capacity of 300 lbs. Moldable inserts for custom fit and support 2.5" thick for optimal comfort and pressure relief Weight capacity of 300 lbs Compass hardware included for easy installation Stretch-air fabric for breathability and moisture-wicking Unit weight: 5.9 lbs The ACTA-BACK Moldable Inserts are a great way to improve your comfort and support while in your wheelchair. They are easy to install and adjust, making them a great option for users of all levels of mobility.