Price is always a driver for young families, but don’t just go for cheap snow pants. Look for designs that are both waterproof and insulated, but be warned. Ratings vary widely depending on the manufacturer and style. For waterproofing, ratings are measured in millimeters, which tell you exactly how much water the material will handle before it is no longer waterproof. Ratings generally run from 1,000mm to 20,000mm; the larger the number, the more waterproof the garment will be. Breathability, which prevents heat build-up and sweating, is measured in grams and can range from 2000 grams to 20,000 grams. Again, the higher the number, the more breathable the fabric will be. The same goes for insulation, which is also measured in grams.