Hand Warmers - Do they work?
Samantha Au
Prince of Wales
Floor Location : 010104

I compared the temperatures generated by 3 brands of disposable hand warmers. Thirty of each type of hand warmer were placed in 30 gloves (N=90) and the temperatures generated were measured over 6 hours. 1,709 data points were collected. Data analysis showed that Heat Factory peaked the earliest with the highest peak temperature, but this dropped significantly by 6 hours. In contrast, Little Hotties had the lowest peak temperature, but the highest sustained temperature at 6 hours. ANOVA analysis revealed that the average temperatures between groups at almost every time interval was statistically significantly different (p<0.05).