Sit down properly and feel it. Soft is often a lie. When you are older, your knees need leverage to stand up, and a deep seat makes that impossible. Most people sink into the foam and forget to check the firmness underneath. A sofa that swallows you is a trap. You want firm support at the centre, not a cloud. The cushion should give a little but not collapse. If you find yourself sliding down and having to use your arms to get back up, the seat depth is simply too deep for your comfort level and will cause pain over time. Check the seat height first. If it sits lower than a standard dining chair, forget it. You need about 45cm clearance from floor to cushion top. This lets you push off without straining. Got lumbar support or not? Test the backrest curve against your spine. If you feel a gap, walk away. Older backs need the curve to stay aligned. Measure the height yourself because the salesperson might suggest a style that looks good on the floor plan but is actually too low for your joints and will ruin your back in the centre of the room. Dense foam keeps its shape longer. Soft foam looks inviting but flattens quickly when used daily in the living room. Old joints cannot take sinking in too much without feeling pain. Sit for ten minutes, not ten seconds. The showroom lighting hides the colour difference. Do not trust the first impression lah. You must feel the difference. You need to sit for at least ten minutes to feel if the foam bottoming out, because the initial bounce is always deceptive in a new showroom setting and you won't know the truth until you are tired.
Warehouse sofa outlets stock pieces, but HDB lift door opening is the real limit at 90cm wide x 209cm tall. Buyers must check corridors and internal doorways to ensure entry works without structural damage. Leaving a 2–5cm buffer prevents jamming during the move into compact flats. Delivery teams assess these limits before transporting large pieces from the showroom.