All Sizes
Verified Top PickEvery size of the Flux Sleep Water-Cooled Mattress Pad is listed $100 below its regular price on fluxsleep.com, from Twin at $199.99 (was $299.99) to King and California King at $349.99 (was $449.99), as shown on 29 October 2026.
Limited Time Offer
Full
VerifiedThe Flux Sleep Water-Cooled Mattress Pad costs $199.99 in Twin and $249.99 in Full on fluxsleep.com, with no subscription, as shown on 29 October 2026.
Limited Time Offer
King
VerifiedThe Queen size Flux Sleep Water-Cooled Mattress Pad costs $339.99 and the King and California King sizes cost $349.99 each on fluxsleep.com, as shown on 29 October 2026.
Limited Time Offer
US
VerifiedFlux Sleep ships every order free within the United States with no minimum spend, and says orders leave within 24 hours, as stated on its site on 29 October 2026.
Limited Time Offer
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Extra codes from partner brands, refreshed alongside this store's offers.
A practical savings guide for shoppers using Flux Sleep US offers.
Flux Sleep does not show a promo code on its site at the moment. The saving it offers is a $100 price cut on every size of its Water-Cooled Mattress Pad, shown on 29 October 2026. Its newsletter sign-up mentions deals for subscribers but names no figure.
The Twin size costs $199.99 (regular $299.99), the Full $249.99 (regular $349.99), the Queen $339.99 (regular $439.99), and the King and California King $349.99 each (regular $449.99). There is no subscription. US buyers can also choose Truemed at checkout to pay with HSA or FSA funds: this needs a short health survey reviewed by a licensed provider, not everyone qualifies, and Truemed adds no fee.
Shipping is free on every US order, and orders leave the warehouse within 24 hours. A return can be started within 30 calendar days of delivery for an unused item in its original packaging; the buyer pays return shipping, and paid tracking upgrades are not refunded. Refunds go back to the original payment method within 5 to 7 business days after the return passes inspection. The pad carries a 1-year warranty.
Offers on this page were checked on the shop's own website on 29 October 2026.
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