... Mainland SizeØ10.3cm Weight90g Also known as: instant heat pack, reusable heat pack, magic heat pack, durable hot pad, click hand warmer, etc ... , and for 60 seconds when be used continuously. Attentions:The ice bag is for external use only. If eye or skin ... sec-1 min.)3, Heat up to approximately 48,4, Ice-free bag;5, remain soft up to -20 °c Certificates1 ...