think I need a new pair

These are my work boots...my job requires me to wear steelies (steel toe caps). They are fine in the winter, but when it`s hot......like it was today (25c) they are not comfy by any stretch of the imagination. My feet by the end of the day look like they`ve been immersed in hot water for a few hours.
I`ve had these for nearly 12 months and although they nicely worn in and moulded to my feet, the left boot has a split in the side and the toe bumpers are starting to come away from the uppers so it`s time for a new pair and the job of breaking them in again, these are fairly light weight at 575grams per boot