This UpEasy Seat Assist is a portable and economical lifting seat which is perfect for those who need help to stand.It activates automatically as the user stands, lifting up to 80% of their weight up to 159 kgs (25 stone). It is fully self-powered and does not require electricity instead using a hydro-pneumatic gas spring. The patented LeveLift Technology ensures gentle and safe lift without pushing you forward. Weighing just 4.1 kgs (9 lbs), it has a built-in carry handle and works on most armchairs or sofas. This UpEasy Seat Assist - Heavy Duty lifting cushion is supplied with a V-Foam (Visco Elastic Memory Foam) cushion which provides excellent pressure relieving qualities as well as offering superior comfort. Fitted with a 100% polyester, fire retardant and waterproof cover that is fully washable and the V-Foam cushion is easy to care for.