AngelH59 Perfect Top Thermal s/s vest, perfect for Windy/Chilly days, at school, at the Park or a long walk. Love this extra layer. Fabulous fabric, too. colourlessgreenideas Cosy vests Great, basic vests. Would be even better if they came on different colours - children aren't at school *all* the time and it seems a shame to wear white under bright or dark coloured tops Porto12 Thermal vests Bought for my grandson. He hasn’t started wearing them yet but I’m sure he’ll be lovely and cosy when he does. LunaP Highly recommend. Lovely and soft, warm thermal undershirts. My 7 year old never wants to take them off. He even sleeps in them. Quite a close fit, to keep in body heat, so fit well under jumpers, school polo shirts etc. Wrap your measuring tape around the fullest part of your child’s chest, keeping the tape close under their arms.

Measure where the collar of your child’s shirt would naturally sit. Always allow a little room in case of a growth spurt!