Mattress GuideSource: Comsumer Report https://www.youtube.com/watch?v=gMOw8F_qrlo;

Innerspring MattressesUsually made of metal. $750-$2900 is pretty expensive.

Many offer hybrid models: foam layers etc. above the spring layers. “Our tests show that none of thses add-ons truly sets one innerspring mattress apart from another.”

Innerspring mattresses are easier to move on than memory foam mattresses. Good for side sleepers.Downside: Transmit bounciness; Partner will feel your bounce.

Memory FoamMostly polyurethane, a durable plastic substance that response to the heat and pressure of your body.

Some offer “dual firmness”; Two people can have different firmness on their side.Changing pose on some memory foam mattresses require some effort.

Major downside: Smell of plastic. “Be sure to air out any memory foam mattress for at least 24-48 hours before you cover it with sheets and sleep on it.”

Natural Latex Mattress (天然乳胶床垫)No odor, but similar feel to memory foam. Made using serum from rubber trees rubber

Processed using one of two methods. Talalay is more expensive. Use both for customized feel.

Synthetic Latex; Less expensive, but blended with other chemicals.

Adjustable AirFilled with pockets of air called air bladders, surrounded by foam.

“People with arthritis, back pain or neck pain are most satisfied sleeping on an adjustable air mattress”

Natural and Organic“The term ‘natural’ is regulated … so it’s meaningless. And a mattress can be labeled as organic even ifonly a portion of its materials are certified organic.”

On the left: Organic and latex. On the right: Certificate for polyurethane foam.

“In general, if you’re looking for certification, expect to pay $2000 or more for a queen size mattress.”

Look for companies that offer a 30-night trial.

9 Things that never decompose (https://www.thealternativedaily.com/9-things-never-decompose-plastic-glass-ink-and-more/):

1. Plastic bottles2. Glass bottles (recyclable with care)3. Ink cartridges (墨盒) “Unfortunately, most ink cartridges are not accepted at recycling facilities.” Save ink!

4. Plastic bags. There may be drop-off centers. “Use reusable bags whenever possible”5. Disposable diapers. “Each disposable diaper contains numerous material (absorbent material, paper, plastic, whatever your child ate, etc.), which makes them difficult to be sorted at a recycling center.”6. Electronic waste “The best way to dispose of your e-waste is to take advantage of manufacturer’s recycling programs in stores like Staples, Home Depot or Best Buy.”7. Light bulbs (Compact fluorescent lamp)8. Ziploc bags9. Styrofoam (泡沫聚苯乙烯). “ material derived from fossil fuels that is made to never break down”

edit: Kaiyu Zheng