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SleepSmart™ 37.5® Down Alternative Duvet Insert Made with Fresh Zone™

Limited Time Offer
$164 $186 $219 $249

Earn $25 back in rewards* for every $250 spent with your Pottery Barn Credit Card.

Learn More

Our new and exclusive Sleepsmart™ Bedding with Fresh Zone technology continuously adjusts to help maintain a climate of personal comfort at the ideal 37.5° Celsius all night long, so you can wake up rested and refreshed.

  • Our Fresh Zone™ technology and 37.5® fibers work together to prevent odor and eliminate bacteria-driven allergens in the fill.
  • Fill is made of 80% polyester and 20% 37.5® performance polyester.
  • As you sleep, temperature and humidity starts to build-up and becomes trapped in your sleep environment or microclimate, this is where you start to feel overheated and uncomfortable and eventually disrupting your sleep as you rollover to find a cool spot. 37.5® technology releases excess heat and humidity, preventing it from becoming trapped within your microclimate.
  • Body heat activated performance, comfort personalized to each sleeper's need for warmth.
  • Moves heat away before sweat can form, minimizing swings in body temperature so you stay asleep longer.
  • Works immediately, and continuously while you sleep to either trap heat when you're cold or evaporate excess heat and humidity when you’re warm.
  • Sewn through box quilting prevents fill from shifting & has corner loops for easy attachment to your duvet cover.
  • Sleepsmart™ is designed to work as a total system; it’s performance increases with additional Sleepsmart™ layers.
  • Imported.
Dimensions & Care


  • Full/Queen: 94" long x 98" wide
  • King/Cal. King: 94" long x 114" wide


  • Machine wash and dry.
  • Do not use fabric softener or dryer sheets.
Shipping & Returns


UPS can deliver most in-stock items within 3-5 business days.

Next Day Delivery and Processing

We can arrange for next day delivery to most destinations within the contiguous 48 states, for an extra charge of $26.00 per address. If we receive your order by 6pm PT Monday through Friday, you'll receive your order the next business day; orders placed on Friday after 6pm PT through Sunday will arrive on Tuesday. Note: Next Day Delivery service is not available for some oversized items, White Glove Delivery, out of stock items, personalized items or for items shipped directly from the manufacturer.

View the complete Shipping and Delivery Information page.


You can return eligible item(s) within 30 days of receiving an order or 7 days for Quick Ship upholstery items for a refund of the merchandise value. An original receipt or gift receipt is required. Monogrammed items and Made to Order furniture or rugs are not eligible for returns. Review the full list of ineligible items and our refund policy below before starting the process.

Easy Ways to Return:

  • Stores - You can return most non-furniture items to your local Pottery Barn store for free.
  • Bring to UPS Location (under 70 lbs) – See our full Easy Returns Policy to start the process.


Ineligible Items

Items non-eligible for returns or exchanges:

  • Monogrammed items
  • Mattresses
  • Gift cards
  • Made to Order items, including custom rugs and furniture
  • Final sale items (with prices ending in $.X7 or $.X9)
  • Items damaged through normal wear and tear

Questions? See our full Easy Returns Policy.

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