

Drift Sleep Tester Kit
⚕️ Clinicians' Choice
2,033 clinicians share DriftSleep on VerifiedMD without compensation.
Sleep on it 30 nights. If your sleep numbers don't get better, we refund you.
What's in the kit.
Three-light LED indicator. Confirms your wall outlet is properly earthed.
Verifies your mat or sheet is actively conductive. Green light means grounded.
US plug. Replaces your existing cord or extends your reach.
Green light or it's not working.
Most grounding products ship without a tester. You plug in and assume. The Tester Kit changes that. Plug in the outlet tester first — three lights confirm your socket is earthed. Then use the conductivity pen on your mat or sheet. Green means connected.
Not just DriftSleep.
Got a grounding mat from somewhere else? Same kit. The outlet tester and conductivity pen work with any grounding product on the market. If you bought it from a competitor and it's not working, you'll know.
Reach any outlet.
The 15ft cord replaces the 10ft standard that ships with most grounding products. If your outlet is across the room, this solves it. Works with any grounding mat, sheet, or pad.
The science only works if you're actually connected.
Two peer-reviewed studies — Park 2025 in Advances in Integrative Medicine and Ghaly & Teplitz 2004 in the Journal of Alternative and Complementary Medicine — confirmed grounding during sleep improves sleep quality, lowers cortisol, and raises HRV.
But the operative word is confirmed. If your outlet isn't earthed, or your mat has degraded, or your cord is faulty — none of that science applies to you. The Tester Kit makes sure it does.
How we compare.
| Feature | Drift Sheet | Earthing.com | Silver-thread brand |
|---|---|---|---|
| Silver % | 10% or 20% silver | 5% | 5% |
| Tester included | ✓ Yes | ✗ No | ✗ No |
| Cord length | 15 ft | 10 ft | 10 ft |
| Money-back guarantee | 30 nights · data-backed | 45-day | 90-day |
Thirty days. Your data decides.
Track your sleep for 30 nights using whatever device you have — Oura Ring, WHOOP, Apple Watch, Garmin, anything.
If your HRV, deep sleep percentage, or resting heart rate doesn't improve, contact us for a full refund.
No forms. No small print.
- 1 Test your outlet. Confirm it's earthed.
- 2 Test your mat or sheet with the conductivity pen.
- 3 Sleep grounded for 30 nights.
- 4 If your metrics don't move, we refund everything.
