I write about sleep for a living − here's everything I'm adding to cart from the Sleep Number sales

Sleep Number's entry-level smart bed just got even more affordable. For less than $900, you get all the core functions of a smart mattress, including adjustable firmness and personalized sleep insights.

This smart bed is filled with memory foam for motion isolation and pressure relief, infused with gel beads to absorb excess thermal energy and keep your bed and your body cool and dry.

'I was nervous about the responsive air function,' reads one recent review, 'but it doesn't so much blow cool air on you as it does pull warm air away from your body. It cools you down without feeling cold.'

Sleep Number makes some of the best pillows in various shapes to suit every sleep position: the Contour has a dip to cushion your neck and shoulders, while the Ultimate is filled with inserts that you can remove and replace until you reach your ideal pillow height and firmness.

These sheets are really coming into their own as the weather warms up. Made from cotton sateen, this sheet set feels silky and smooth against your skin. The fitted sheet features a SmartFit design: that's just marketing speak for all-around elastic to grip the corners of your mattress. I haven't had any trouble with my sheets slipping since I started testing.

These pillowcases boast a 4.7 average star rating from more than 700 verified customer reviews. 'It is nice not having to flip the pillow to the cool side throughout the night,' says one recent shopper. 'You always feel like you're sleeping on the cold side of the bed.'

This mattress layer is a cross between a topper and a protector. Filled with plush fiberfill and wrapped in a poly-blend cover, the mattress layer is fitted with stretchy corner straps to hug the sides of your bed. I'd put it up there with the best cooling mattress toppers and pads for hot sleepers.

This thermoregulating layer comes in half sizes, so you can position it on either side of the bed. If you sleep hot, but your partner runs cool, then either one of you can use the Dual Temp Mattress Layer to set your ideal sleep temperature at the touch of a button.

As a hot sleeper, I often overheat in the summer, but I still like to sleep with a layer. On seriously hot nights, I switch out my best cooling comforter for a lightweight blanket. This one is filled with breathable lyocell and threaded with antimicrobial zinc to bust bacteria.

Where down is designed to trap air, which can get a little stuffy in the summer, down alternative blends are often better for thermoregulation. This comforter set gets glowing customer reviews: light enough for summer, but just thick enough to work year-round.

Sleep Number makes the best duvet inserts for customers who share a bed, but not a sleep style. With their Create Your Perfect Comforter program, you can choose your warmth (Light, Medium, or Extra Warm) and customize your fill (Down or Down Alternative) on either side.

Sleep Number bedding can improve your bedroom aesthetic, as well as being practical. This bed skirt is designed to hide box springs and bed frames while concealing clutter to elegant, understated effect. You can shop it in White, Fog, Nickel, or Oatmeal, to suit your scheme.