Cots are a small bedroom design for infants. It comes with a fence-like barrier around the bed. Thus, it ensures the safety of the children while sleeping or doesn’t crawl out of bed. However, you need to keep in mind that these beds are exclusively for babies who started crawling & can bump on their sides. So, no cots aren’t the standard size! While you look online, you will come across different bed frame sizes, mattresses, and bed options. So, the typical size of the cotbed is around 60x 30x 53 inches. At the same time, the mattress which fits on the standard cotbed is 55 x 27.5 inches. Besides, a blanket that will fit in this bed will be around 65×40 inch & the duvet cover will be 57 x 48inch.