What is the safest type of cot?

Could you please elaborate on what you mean by "safest type of cot"? Are you referring to safety for the baby sleeping in it, or the durability and longevity of the cot itself? If you're concerned about the baby's safety, some factors to consider might include the cot's sturdiness, the presence of any small parts or gaps that could pose a choking hazard, and the ease of use of safety features like the side rails and adjustable mattress heights. Additionally, you may want to research the materials used in the cot's construction to ensure they are non-toxic and SAFE for your baby. Can you provide any more context or specific details about what you're looking for in a "safest type of cot"?