How It Works

Science shows that better sleep quality drives better health and daily performance outcomes than simply logging more hours in bed. But the quality of your sleep depends on the conditions around you. Proudly developed with experts and tested in ongoing partnership with Loughborough University, Zed is designed to deliver world-leading thermal and physical comfort that supports your best sleep.

  • Sleep is more than time in bed

    Sleep is an active process where your brain and body need the right conditions, especially the right temperature, to function optimally. Because deep recovery happens during your most restorative sleep phases: Slow-Wave Sleep (Deep Sleep) & REM Sleep.

  • Hidden problem: fragmentation

    Many sleep disruptions are invisible. You may not fully wake up, but your body still briefly exits restorative sleep stages. These micro-arousals fragment sleep and reduce recovery. Two surprisingly common causes are temperature instability and physical discomfort.

  • How sleep works

    To fall asleep, your core body temperature must drop by roughly 1–2°C. Once you’re asleep, temperature stability remains important throughout the night. At the same time, your brain continues monitoring the body for potential “threats”. If the skin senses irritation, pressure or discomfort, it can trigger micro-arousals that fragment deeper sleep.

  • How Zed supports you

    Zed is engineered to support the two conditions required for deep, continuous sleep: stable temperature and physical comfort. For science-led sleep comfort that feels extraordinary.

3/3
Women's Sleep Pants ZedCore™ Sleep Technology

The problem? Many of us struggle to stay comfortable at night

1

%

report regularly being too hot or cold while sleeping (Gallup, 2023)

1

%

of sleepers wake up during the night due to physical discomfort (NSF)

1

%

of sleepers report temperature variation as their primary sleep disruptor (NSF)

We spend a third of our lives asleep. And what we wear closest to our skin during that time matters. For your best quality sleep & recovery, keeping the right body temperature & removing common irritations is key. Zed sleepwear combines natural, high-tech fibres with purposeful design to pioneer a new dimension of thermal and physical sleep comfort. Read about our innovation below.

Thermal ComfortPhysical Comfort

Engineered to support the two conditions required for deep, uninterrupted sleep: stable temperature and physical comfort.

Breathability

Moisture wicking

Skin comfort

Stretch & movement

Odour resistance

●●●●●

●●●●

●●●●●

●●●●

●●●●

Cotton*

●

●

●●●

●

●

Polyester*

●●

●●

●

●●●

●

*Compared to 200gsm cotton and 200gsm polyester. Independently tested by textile laboratories and ongoing research with Loughborough University.

Dr Bryna Chrismas, PhD

Applied Exercise Physiologist & Accredited Exercise Scientist

“Sleep plays a fundamental role in women’s health and daily functioning across the lifespan. Hormonal changes across the menstrual cycle, perimenopause, and menopause can bring symptoms that disrupt sleep, often through altered temperature regulation and night-time discomfort. Zed Sleep’s sleepwear design integrates fabric choices that support thermal comfort and reduce sensory disturbance, reflecting an evidence-led approach grounded in sleep physiology and scientific testing.”

Meet our experts

Ready to experience extraordinary sleep?

Order Now