Okayice
Ultra Thin Hand Warmer
Historical Reference
This product is included for historical comparison and is not currently recommended for purchase.
Poor performance. 135.1°F max temp, very slow heating at 15 min 57 sec. 'Name OK seems to fit as this thing is cold as ice.' Claims 4000mAh but underperformed significantly.
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Best Hand Warmer Ever Tested! One Clear Winner!
Project Farm
Dec 14, 2025
Ranked #15
2.4
"Poor performance. 135.1°F max temp, very slow heating at 15 min 57 sec. 'Name OK seems to fit as this thing is cold as ice.' Claims 4000mAh but underperformed significantly."