| Manufacturer | Eight Sleep |
|---|---|
| Type | Water-cooled and heated mattress cover with Hub, with sleep tracking |
| Series | Pod |
| Released | May 2024 (announced 8 May 2024) |
| Price at launch | Pod 4 from $2,449 (Twin) and $2,549 (Queen). Pod 4 Ultra from $4,049 (Queen). |
| Predecessor | Eight Sleep Pod 3 |
| Successor | Eight Sleep Pod 5 |
| Status | Replaced by Pod 5 in May 2025 and by Pod 6 in September 2026 |
| Versions | Pod 4 (Cover and Hub) and Pod 4 Ultra (adds the adjustable Base) |
| Sizes | Full, Queen, King and California King |
| Who it suits | Hot sleepers and couples who want each side of the bed at its own temperature, with sleep tracking and nothing to wear. |
Specifications and features as at launch.
Expert opinion
Eight Sleep Pod 4 is a water-cooled and heated mattress cover that sets each side of the bed to its own temperature and tracks sleep with no wearable. Autopilot adjusts the temperature through the night, and tap controls on the Cover let you change it without the phone.
Eight Sleep says the Hub was reconfigured for more airflow and runs 40% quieter than Pod 3. The Ultra version adds an adjustable Base that raises your head when it detects snoring. Pod 4 needs an Autopilot membership for the full set of features.
Deciding whether to buy? Pod 4 has been replaced twice, most recently by Pod 6.
What’s new versus Pod 3
Hardware
- A reconfigured Hub with more airflow, which Eight Sleep says makes it 40% quieter than Pod 3.
- More cooling power, so the Pod can cool to 55°F (13°C) during heat waves.
- Tap sensors on each side of the Cover to change the temperature or dismiss the alarm.
- An adjustable Base on the Ultra version, with snoring detection and adjustable body positions.
Software
- Autopilot 3.0, which adjusts temperature and elevation from demographics, sleep history and real-time sleep patterns.
- Biannual maintenance filter delivery.
Specifications
| Temperature | |
|---|---|
| Method | Water circulated through the Cover by the Hub |
| Range | 13 to 43°C (55 to 110°F) on each side |
| Zones | Two, one per side |
| Cover | |
| Fit | Over your existing mattress, like a fitted sheet |
| Measures | Heart rate, HRV, respiratory rate and sleep stages |
| Sensors | 36 biometric and environmental sensors across the Cover and Hub combined |
| Wearable needed | No |
| Controls | Tap sensors on each side, plus the Eight Sleep app |
| Hub | |
| Size | About 16 x 7 x 17 in (41 x 18 x 43 cm), as measured by Tom’s Guide. Eight Sleep does not publish it. |
| Base (Ultra) | |
| Function | Raises the head when snoring is detected, with adjustable body positions |
| Ownership | |
| Membership | Autopilot membership for the full feature set |
| Warranty | 2 years |
| Noise | 40% quieter than Pod 3, per Eight Sleep |
| © the5krunner. Link required. | |
Features
Temperature
- Autopilot adjusts each side of the bed as you move between sleep stages, and warms the bed to wake you.
- Vibration and thermal alarms.
- Control without the phone, through the tap sensors.
Sleep and health tracking
- Tracking of heart rate, HRV, respiratory rate and sleep stages for up to two people in the same bed.
- Snoring detection.
Base (Ultra)
- The Base raises your head when it detects snoring and offers adjustable positions for reading and sleeping.
Further reading
Related
The current model is Eight Sleep Pod 6.
Eight Sleep Pod 6
Excellent. Expensive. Silent.
Quick answers
What is the difference between Pod 4 and Pod 4 Ultra?
Pod 4 is the Cover and Hub. Pod 4 Ultra adds an adjustable Base that raises your head when it detects snoring.
Is Eight Sleep Pod 4 quieter than Pod 3?
Yes. Eight Sleep says the Pod 4 Hub runs 40% quieter than Pod 3.
Has Eight Sleep Pod 4 been replaced?
Yes. Pod 5 replaced it, and Pod 6 replaced Pod 5.
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin with any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafing stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Beet It Sport nitrate shots: Beetroot shots I take in the days before a race. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable arches, perfect position. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Health, recovery and sleep
- Kineon MOVE+: Red and infrared light for sore knees, Achilles and other joints after hard training. I use it.
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet. Occasional use.
- hDrop: Measures my sweat loss in summer and indoors. I use it.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used. Occasional use.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions. I use both.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Ravemen FR1000: The light and the computer mount in one unit, so nothing else goes on the bars. Better than mine.
- Ravemen FR1500SE: 1,500 lumens hanging under your Garmin, for proper night rides.
- Ravemen FR1100SE: 1,100 lumens under your Garmin, and up to 46 hours on slow flash.
- Ravemen FR500: A brighter FR300 with the same mount.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home via Starling. I use it.
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