1.How long is the expiration date?
The validity of warmer is about 48 months; mining warmer is 36 months; Warm feet, long warm feet, cartoon hand warmer, heat neck warmer is about 36 months;
2. The outer package indicates that warmer can relief shoulder and waist pain, does it base on the principle to achieve the effect?
Due to the accumulated fatigue within the muscle, this can affect out health , so through warmer to heat pain parts, this can promote the blood circulation and achieve the purpose of preventing fatigue matter accumulation. Only in this way can we achieve out ideal effect!