Hi,
My 1.5-year-old has always been tall and quickly outgrew a travel cot that we put up a few times at the grandparents’ homes. At home he sleeps in a large cot bed which will last him several years. We’ve lowered the mattress so the height of the sides prevents him from climbing over.
But what do we do if we want him looked after by his grandparents or if we take an overnight trip somewhere? He won’t fit in the standard travel cots and he won’t stay in a normal bed, he’ll jump and roll and climb out of it to go play. I’ve seen side bumpers for a single bed but they still leave the bottom of the bed clear.