Two hand warmer pockets - You may not notice the entrance to the side hand warmer pockets as it's hidden, with the zipper opening tucked neatly into the seam.

两个保暖口袋-您可能没有注意到侧口袋的隐藏开口，因为拉链整齐的进入了接缝中。

Methods An electric hand warmer was transformed and tests were made many times with different movement temperature of thermostat.

改造电热暖手炉，用不同动作温度的温控器多次测试。