Insulation

No. The filling and the rain protection of the outer fabric are separate properties. Sustained rain needs an explicitly waterproof construction or an additional shell.

If its warmth and airflow suit your pace. Start with less insulation and use the front zip rather than soaking the inside with sweat.

Weight alone does not describe fill quantity, cut or wind protection. Compare intended use and construction instead of sorting unrelated models only by grams.

Wash and dry according to the care label. Store it dry and avoid leaving it tightly compressed unnecessarily; a small stuff sack is mainly for transport.

For example, CMP lists CMP KID Ski Jacket Snaps Hood at 710 g. Compare weight figures only when their reference sizes match.

Choose size by body measurements and the brand chart rather than age alone. Ask your child to reach, squat and operate the fastenings. Excess sleeve length gets in the way of hands; lots of growing room is not a good fit. Still leave space for the intended layers.