Well, good to report that the swimming experience went well

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Took him on the Friday and was in about 1/2hr before it looked like he was going to fall asleep in the little swimming aid

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I'm glad he enjoyed it and by the looks of it will become a fortnightly experience(my day off is once a fortnight).
One tip i read that didn't work too well was the wearing of a normal nappy under the swim nappy. Obviously the water got in and had the heaviest nappy ever!!!
Will ditch the normal one the next time i think