Design, convenience, and functionality. This feeding bottle will make the life of a parent easier enabling one to warm up milk on the go. iiamo go is a self-warming feeding bottle made in Denmark. The first feeding bottle in the world that warms 6 oz of milk up to the recommended 98.6F (body temperature) in about 4 minutes. No electricity, no cord, no limitations. iiamo go is dedicated to parents with a spontaneous twist to life. Go visit your friends, go shopping with no stress, go to a café, go for a run, or go traveling. Avoid that long trip to the kitchen and back in the middle of the night. Once it's ready simply give the bottle a little shake to distribute heat evenly as you would normally. Always fill the bottle completely to ensure the milk heats up to 98.6F. Milk will remain warm for up to 30 minutes.