?Application? Mainly to be used to store and transport the insulin,Insulin injection refill,insulin pen,vaccine, growth hormone all medicines required to storage in cold, at normal room temperature (2?-25?) condition. ?Principle? The liquid in the cold storage bottle is Natural Biogel?it's environmentally friendly and there is no harm to health. If any questions contact us any time! ?Capacity? 1.Outside size?230*65mm?H* ?? 2.Cold Storage Space :165*23.7mm?H* ?? 3.Capacity?2 Insulin pen(normal size)/ 1insulin pen and 8 Insulin refills /12 Insulin refills Note? For vials:After put in the cold storage bottle,Maximum diameter of the cup mouth is 23.7mm,but if you put vials first and then put cold stroage bottle?Maximum diameter of the vials can be hold is 28mm. If you can't sure how many your pen/vials will fit,and whether your vials will fit,you can contact us via amazon or email :[email protected]. Tell us your size(Length &Diameter),We will check for you and reply as soon as possible! 4.Weight?600g 5.What You Get: Insulin cooler cup*1, Cold storage bottle*1, Emergency bottle*1, Pen bag*2? Thermometer*1 instructions*1 ?Instructions? Put the Cold storage bottle in the freezer for 6-8 hours, after that take it out aside for 5-10minutes,then put the frozen Cold storage bottle in cooler cup?and then it will work. Note? After the Cold storage bottle is frozen, it will become a solid at 32°F. Put the Cold storage bottle into the cooler cup and tighten the lid for 5 minutes. Check the temperature inside?when temperature is stable at 35.6°F?take the medicine into it. ?Service? We offer 12-month warranty and friendly customer service.If any further question, please contact us via amazon or email [email protected]