It only weighs 2 pounds and fits neatly into a bag when you let the air back out of it, and once it's inflated, it has a head rest and a side pocket for stashing things like glasses and your phone. Perhaps most importantly for larger fams — it comes in a *ton* of different colors, so everyone will always know which one is "theirs."
Promising review: "We were wonderfully surprised how comfortable and easy to inflate these chairs were. After buying the first one and having our kids fight over it, we decided to go back and buy three more, so everyone in the family could lounge in comfort. They fold up small enough to where you can comfortably carry all four in a small shopping bag or tote. They can be inflated by just holding them in the direction of the wind on a brisk day or by running around in a big circle on a calm day. They have been a lifesaver during the stay at home/quarantine period this spring. We haven't tried them on water yet, but they claim to function as rafts as well. We're looking forward to using them during our next beach trip." —Amazon Customer
*Another* promising review: "I purchased this for a 6-year old to play on during rainy quarantine days and it has exceeded expectations. While we occasionally use it for lounging, it also doubles as a (pretend) pirate ship, white water raft, space shuttle, quicksand pit and swamp monster. It also serves as a slide, seesaw, and wrestling opponent for a 50 lb kid without having to reinflate. I realize these are all off-label uses of the chair, but after 10 weeks stuck in the house with this kid, we're desperate. I used a hair dryer (set to cool) to quickly inflate this indoors versus flapping myself to death like an idiot. The static electricity generated from the material is also great for collecting dog hair, so I count this as a discount Roomba." —Anna V.
Get it from Amazon for $40.98+ (available in 14 colors).