Before buying bibs I read the reviews and I hesitated because of the reviews that are too thick bibs especially for the summer. The thickness is the result of the layered material "polar" but mostly very absorbent, which is necessary. If it was that a bandana cotton, it'd be quenched after a few minutes. In addition to the variable closure allows to tighten the bandanna more or less, so if it's a little warmer, tighten a little less is when even very effective. If it is really so hot that this bandana is too hot even loosened in my opinion a bit of drool on the baby's clothes will dry so fast that the bandana is not necessary. So in my opinion this problem is not thick very boring reality. Bibs very cute, very practical, and it's been a few months that I wash not 30 as indicated but 40 and AC pass without problem.