Keeping the kids warm and dry is important. The Amp jacket from Surfanic does this well. The 5K waterproof breathability rating is a good start, but its the added features that make this great. A 'snap to pant' feature allows you to join Surfanic pants & jacket together, making a 'onsie', this keeps snow out and warmth in. The dry butt patch, prevents the inside of the jacket getting wet and keeps keep them dry when they need to sit down and rest. Fully taped seams, snow cuffs and a snow skirt to top this off.