These mittens feature the extra-long sleeve, waterproof Drypel liner, and 40g Thinsulate^™ insulation, just like SnowStoppers' fleece mittens. The nylon shell, unique to the SnowStoppers^® Nylon mittens, resists snow and ice better than fleece. The tough grip palm is great for skiing/snowboarding, sledding and even building snowmen! 

• Extra-Small (Ages 6-18 months - has NO THUMB)
• Small (Ages 1-3 years)
• Medium (Ages 2-5 years)
• Large (Ages 4-8 years)
• Extra-Large (7-12 years)

It's OK for mittens to be a little big but it's no good if they are too small. Mitten measurements below are from fingertip to where the mitten tightens at the wrist.

• Extra-Small - 3 1/2" for ages 6-18 months
• Small - 4" for Ages 1-3
• Medium - 4 1/2" for Ages 2-5
• Large - 5" for Ages 5-8
• Extra Large - 5 3/4" for Ages 7-12.

These are exterior measurements. Subtract 1/4 to 1/2 inch for inside measurement and to allow room for fingers to move. SnowStoppers always suggests getting the next size up if you're not sure which size you need.