Reddit reviews TravelMate Extra-Large Memory Foam Seat Cushion – Perfect for Office Chair and Wheelchair – Does Not Slip Even on Smooth Marble Floors – Washable & Breathable Cover – Relieves Back Pain – 19”x17”x3”

EXTRA-LARGE COMFORT: The extra-large size of the TravelMate Memory Foam Seat Cushion means that pressure is spread over a larger area, giving you a more comfortable fit. Each premium memory foam cushion is 19” x 17” x 3” to fit a variety of seats.BREATHABLE MEMORY FOAM: Our extra-large cushion is covered with a layer of 3D ventilated fabric to disperse heat over a thick layer of premium memory foam, so you won’t experience heat buildup even after hours of sitting.WON’T FLATTEN OUT: Give the TravelMate Extra-Large about a week to conform to your shape, and you’ll experience custom-fitting comfort every time you sit on it without the eventual flattening effects of inferior memory foam cushions.NON-SLIP COVER: There’s nothing worse than your chair cushion sliding around, so we’ve added a non-slip silicone layer at the bottom of our extra-large cushions to keep them in place. We’ve even tested its non-slip abilities on a smooth marble floor!RELIEVES BACK PAIN: Firm enough to support you and soft enough to be comfortable, TravelMate will support your whole body while sitting. It comes with a convenient carrying handle attached so you can take the comfort and support anywhere.