Sunday Citizen: The World’s Softest Luxury Bedding and Loungewear

Porto Bamboo Viscose Cooling Top Sheet

Porto Bamboo Viscose Cooling Top Sheet - Main image
$75 $170 In stock

Category: Premium Bamboo Viscose

Performance meets refinement. The Porto Bamboo Viscose Cooling Top Sheet elevates the everyday flat sheet with Outlast® technology, a patented phase-change system that absorbs excess body heat and releases it when your temperature drops. Striped design with refined piping for a polished look, it feels smooth against the skin and sits lightly over your bed exactly as a top sheet should.

  • Outlast® technology actively regulates body temperature

  • Refined striped piping detail

  • Smooth, soft hand feel

  • Machine washable

Customer Reviews (4.8 / 5 · 5 reviews)

Ellie ★★★★★

I was skeptical about phase-change tech in bedding, but after a few hot nights I’m convinced—no more waking up drenched, and the bamboo viscose feels noticeably cooler to the touch than my old cotton sheet. It’s borderline luxe how smooth and breathable it is, yet it still holds its shape after thre

Joshua S. ★★★★★

The Outlast® tech really works—my partner runs hot and this sheet stayed noticeably cooler through the night than our old cotton one. It’s also surprisingly smooth and breathable for a flat sheet, not at all stiff like some bamboo blends I’ve tried.

Olivia ★★★★★

Woke up at 3 a.m. and realized I wasn’t flipping the pillow to the cool side for the first time in months—this sheet just stays temperate all night, and the bamboo weave feels silky without gripping my skin. Even my partner, who runs hot, admitted the phase-change lining actually pulls the heat away