Start with the risk level. If your parent shifts positions on their own and gets up regularly, a good static foam mattress is often enough. If they're mostly bedbound, have thin skin, or already have a pressure injury, an alternating-air mattress that redistributes pressure on a cycle is the safer choice. When you're unsure, ask a home-care nurse or occupational therapist for a rating first, then buy to match it. We'd rather see you slightly over-prepared than under.
Match the mattress to the home, too. Older Calgary homes in Inglewood, Bridgeland, or Killarney often have narrow stairs and tight bedrooms, so measure doorways and check that an air pump has a nearby outlet. In newer suburban builds out in Mahogany or Evanston, space is rarely the issue, but you'll still want a wipeable, waterproof cover and a clear weight capacity. Dry Chinook-belt air can make skin fragile, so a breathable cover you can clean easily earns its keep here.
Prioritize a retailer with real seniors and accessibility experience over the cheapest listing. Ask who delivers and sets up the mattress, whether they'll show you how the pump works, and what happens if a motor fails on a cold weekend. A solid warranty and a responsive local service line matter more than a slightly lower sticker.
Our honest recommendation: for a parent at genuine risk, buy the alternating-air system through a retailer who installs it and stands behind service, rather than ordering a bargain foam mattress online. The trade-off is real, air systems cost more up front and the pump needs power and occasional care, but replacing a mattress after a pressure injury develops costs far more in every sense. If risk is low and mobility is good, don't overspend, a quality foam mattress is the sensible call.