No 09
The heat adjusts between 104 and 149°F and lasts 2.5 to 8.5 hours depending on the level. With seven protective layers and 3M insulation they stay warm even with the heat off. Touchscreen fingertips, wrist straps and a clip to keep the pair together finish them off.
Affiliate disclosure: links may earn us a commission. Picks are editorial and don't change based on payout.